diff --git a/src/slic3r/Utils/AstroBox.cpp b/src/slic3r/Utils/AstroBox.cpp
index 20560f1c1..8392b6e8f 100644
--- a/src/slic3r/Utils/AstroBox.cpp
+++ b/src/slic3r/Utils/AstroBox.cpp
@@ -79,17 +79,13 @@ bool AstroBox::test(wxString &msg) const
     return res;
 }
 
-wxString AstroBox::get_test_ok_msg () const
-{
-    return _(L("Connection to AstroBox works correctly."));
-}
-
 wxString AstroBox::get_test_failed_msg (wxString &msg) const
 {
     return GUI::from_u8((boost::format("%s: %s\n\n%s")
-        % _utf8(L("Could not connect to AstroBox"))
+        % (boost::format(_u8L("Could not connect to %s")) % get_name())
         % std::string(msg.ToUTF8())
-        % _utf8(L("Note: AstroBox version at least 1.1.0 is required."))).str());
+        % _u8L("Note: AstroBox version at least 1.1.0 is required.")
+        ).str());
 }
 
 bool AstroBox::upload(PrintHostUpload upload_data, ProgressFn prorgess_fn, ErrorFn error_fn) const
diff --git a/src/slic3r/Utils/AstroBox.hpp b/src/slic3r/Utils/AstroBox.hpp
index f24018b1b..8b064f81b 100644
--- a/src/slic3r/Utils/AstroBox.hpp
+++ b/src/slic3r/Utils/AstroBox.hpp
@@ -21,7 +21,6 @@ public:
     const char* get_name() const override;
 
     bool test(wxString &curl_msg) const override;
-    wxString get_test_ok_msg () const override;
     wxString get_test_failed_msg (wxString &msg) const override;
     bool upload(PrintHostUpload upload_data, ProgressFn prorgess_fn, ErrorFn error_fn) const override;
     bool has_auto_discovery() const override { return true; }
diff --git a/src/slic3r/Utils/Duet.cpp b/src/slic3r/Utils/Duet.cpp
index ba93603a1..c51897b37 100644
--- a/src/slic3r/Utils/Duet.cpp
+++ b/src/slic3r/Utils/Duet.cpp
@@ -42,18 +42,6 @@ bool Duet::test(wxString &msg) const
 	return connectionType != ConnectionType::error;
 }
 
-wxString Duet::get_test_ok_msg () const
-{
-	return _(L("Connection to Duet works correctly."));
-}
-
-wxString Duet::get_test_failed_msg (wxString &msg) const
-{
-    return GUI::from_u8((boost::format("%s: %s")
-                    % _utf8(L("Could not connect to Duet"))
-                    % std::string(msg.ToUTF8())).str());
-}
-
 bool Duet::upload(PrintHostUpload upload_data, ProgressFn prorgess_fn, ErrorFn error_fn) const
 {
 	wxString connect_msg;
diff --git a/src/slic3r/Utils/Duet.hpp b/src/slic3r/Utils/Duet.hpp
index e5aec548b..615ea60a2 100644
--- a/src/slic3r/Utils/Duet.hpp
+++ b/src/slic3r/Utils/Duet.hpp
@@ -20,8 +20,6 @@ public:
 	const char* get_name() const override;
 
 	bool test(wxString &curl_msg) const override;
-	wxString get_test_ok_msg() const override;
-	wxString get_test_failed_msg(wxString &msg) const override;
 	bool upload(PrintHostUpload upload_data, ProgressFn prorgess_fn, ErrorFn error_fn) const override;
 	bool has_auto_discovery() const override { return false; }
 	bool can_test() const override { return true; }
diff --git a/src/slic3r/Utils/FlashAir.cpp b/src/slic3r/Utils/FlashAir.cpp
index 22eaddece..cdf943ac0 100644
--- a/src/slic3r/Utils/FlashAir.cpp
+++ b/src/slic3r/Utils/FlashAir.cpp
@@ -63,17 +63,12 @@ bool FlashAir::test(wxString &msg) const
 	return res;
 }
 
-wxString FlashAir::get_test_ok_msg () const
-{
-	return _(L("Connection to FlashAir works correctly and upload is enabled."));
-}
-
 wxString FlashAir::get_test_failed_msg (wxString &msg) const
 {
     return GUI::from_u8((boost::format("%s: %s\n%s")
-                    % _utf8(L("Could not connect to FlashAir"))
+                    % (boost::format(_u8L("Could not connect to %s")) % get_name())
                     % std::string(msg.ToUTF8())
-                    % _utf8(L("Note: FlashAir with firmware 2.00.02 or newer and activated upload function is required."))).str());
+                    % _u8L("Note: FlashAir with firmware 2.00.02 or newer and activated upload function is required.")).str());
 }
 
 bool FlashAir::upload(PrintHostUpload upload_data, ProgressFn prorgess_fn, ErrorFn error_fn) const
diff --git a/src/slic3r/Utils/FlashAir.hpp b/src/slic3r/Utils/FlashAir.hpp
index 181405d46..b5c6eaa15 100644
--- a/src/slic3r/Utils/FlashAir.hpp
+++ b/src/slic3r/Utils/FlashAir.hpp
@@ -21,7 +21,6 @@ public:
 	const char* get_name() const override;
 
 	bool test(wxString &curl_msg) const override;
-	wxString get_test_ok_msg() const override;
 	wxString get_test_failed_msg(wxString &msg) const override;
 	bool upload(PrintHostUpload upload_data, ProgressFn prorgess_fn, ErrorFn error_fn) const override;
 	bool has_auto_discovery() const override { return false; }
diff --git a/src/slic3r/Utils/OctoPrint.cpp b/src/slic3r/Utils/OctoPrint.cpp
index b3fe215d9..9dc9b4e74 100644
--- a/src/slic3r/Utils/OctoPrint.cpp
+++ b/src/slic3r/Utils/OctoPrint.cpp
@@ -78,14 +78,13 @@ bool OctoPrint::test(wxString &msg) const
     return res;
 }
 
-wxString OctoPrint::get_test_ok_msg () const
-{
-    return wxString::Format(_(L("Connection to %s works correctly.")), get_name());
-}
-
 wxString OctoPrint::get_test_failed_msg (wxString &msg) const
 {
-    return wxString::Format("%s: %s\n\n%s", wxString::Format(_(L("Could not connect to %s")), get_name()), msg, _(L("Note: OctoPrint version at least 1.1.0 is required.")));
+    return GUI::from_u8((boost::format("%s: %s\n\n%s")
+        % (boost::format(_u8L("Could not connect to %s")) % get_name())
+        % std::string(msg.ToUTF8())
+        % _u8L("Note: OctoPrint version at least 1.1.0 is required.")
+        ).str());
 }
 
 bool OctoPrint::upload(PrintHostUpload upload_data, ProgressFn prorgess_fn, ErrorFn error_fn) const
diff --git a/src/slic3r/Utils/OctoPrint.hpp b/src/slic3r/Utils/OctoPrint.hpp
index bd6365394..c91dc5834 100644
--- a/src/slic3r/Utils/OctoPrint.hpp
+++ b/src/slic3r/Utils/OctoPrint.hpp
@@ -24,7 +24,6 @@ public:
     const char* get_name() const;
 
     bool test(wxString &curl_msg) const override;
-    wxString get_test_ok_msg () const override;
     wxString get_test_failed_msg (wxString &msg) const override;
     bool upload(PrintHostUpload upload_data, ProgressFn prorgess_fn, ErrorFn error_fn) const override;
     bool has_auto_discovery() const override { return true; }
diff --git a/src/slic3r/Utils/PrintHost.cpp b/src/slic3r/Utils/PrintHost.cpp
index 4f7728540..455494277 100644
--- a/src/slic3r/Utils/PrintHost.cpp
+++ b/src/slic3r/Utils/PrintHost.cpp
@@ -20,6 +20,7 @@
 #include "Repetier.hpp"
 #include "Klipper.hpp"
 #include "../GUI/PrintHostDialogs.hpp"
+#include "slic3r/GUI/I18N.hpp"
 
 namespace fs = boost::filesystem;
 using boost::optional;
@@ -30,6 +31,19 @@ namespace Slic3r {
 
 PrintHost::~PrintHost() {}
 
+
+wxString PrintHost::get_test_ok_msg() const
+{
+    return wxString::Format(_L("Connection to %s works correctly."), get_name());
+}
+
+wxString PrintHost::get_test_failed_msg(wxString& msg) const
+{
+    return GUI::from_u8((boost::format("%s: %s")
+        % (boost::format(_u8L("Could not connect to %s")) % get_name())
+        % std::string(msg.ToUTF8())).str());
+}
+
 PrintHost* PrintHost::get_print_host(DynamicPrintConfig *config)
 {
     PrinterTechnology tech = ptFFF;
diff --git a/src/slic3r/Utils/PrintHost.hpp b/src/slic3r/Utils/PrintHost.hpp
index 35a870b29..52be7bd4c 100644
--- a/src/slic3r/Utils/PrintHost.hpp
+++ b/src/slic3r/Utils/PrintHost.hpp
@@ -39,8 +39,8 @@ public:
     virtual const char* get_name() const = 0;
 
     virtual bool test(wxString &curl_msg) const = 0;
-    virtual wxString get_test_ok_msg () const = 0;
-    virtual wxString get_test_failed_msg (wxString &msg) const = 0;
+    virtual wxString get_test_ok_msg () const;
+    virtual wxString get_test_failed_msg (wxString &msg) const;
     virtual bool upload(PrintHostUpload upload_data, ProgressFn prorgess_fn, ErrorFn error_fn) const = 0;
     virtual bool has_auto_discovery() const = 0;
     virtual bool can_test() const = 0;
diff --git a/src/slic3r/Utils/Repetier.cpp b/src/slic3r/Utils/Repetier.cpp
index 115ea010e..c3c24c38e 100644
--- a/src/slic3r/Utils/Repetier.cpp
+++ b/src/slic3r/Utils/Repetier.cpp
@@ -66,7 +66,7 @@ bool Repetier::test(wxString &msg) const
                 const auto text = ptree.get_optional<std::string>("name");
                 res = validate_version_text(text);
                 if (! res) {
-                    msg = GUI::from_u8((boost::format(_utf8(L("Mismatched type of print host: %s"))) % (text ? *text : "Repetier")).str());
+                    msg = GUI::from_u8((boost::format(_u8L("Mismatched type of print host: %s")) % (text ? *text : "Repetier")).str());
                 }
             }
             catch (const std::exception &) {
@@ -79,17 +79,12 @@ bool Repetier::test(wxString &msg) const
     return res;
 }
 
-wxString Repetier::get_test_ok_msg () const
-{
-    return _(L("Connection to Repetier works correctly."));
-}
-
 wxString Repetier::get_test_failed_msg (wxString &msg) const
 {
         return GUI::from_u8((boost::format("%s: %s\n\n%s")
-        % _utf8(L("Could not connect to Repetier"))
+        % (boost::format(_u8L("Could not connect to %s")) % get_name())
         % std::string(msg.ToUTF8())
-        % _utf8(L("Note: Repetier version at least 0.90.0 is required."))).str());
+        % _u8L("Note: Repetier version at least 0.90.0 is required.")).str());
 }
 
 bool Repetier::upload(PrintHostUpload upload_data, ProgressFn prorgess_fn, ErrorFn error_fn) const
diff --git a/src/slic3r/Utils/Repetier.hpp b/src/slic3r/Utils/Repetier.hpp
index d94d7ec56..ee5d17426 100644
--- a/src/slic3r/Utils/Repetier.hpp
+++ b/src/slic3r/Utils/Repetier.hpp
@@ -22,7 +22,6 @@ public:
     const char* get_name() const;
 
     bool test(wxString &curl_msg) const override;
-    wxString get_test_ok_msg () const override;
     wxString get_test_failed_msg (wxString &msg) const override;
     bool upload(PrintHostUpload upload_data, ProgressFn prorgess_fn, ErrorFn error_fn) const override;
     bool has_auto_discovery() const override { return false; }