diff --git a/xs/src/libslic3r/Log.cpp b/xs/src/libslic3r/Log.cpp
index fe2a265b7..5313b4cbf 100644
--- a/xs/src/libslic3r/Log.cpp
+++ b/xs/src/libslic3r/Log.cpp
@@ -52,9 +52,10 @@ void _Log::debug(const std::string& topic, const std::wstring& message) { this->
 void _Log::fatal_error(const std::string& topic, const std::string& message) {
     this->fatal_error(topic) << message << std::endl;
 }
-std::ostream& _Log::fatal_error(const std::string& topic) {
+std::ostream& _Log::fatal_error(const std::string& topic, bool multiline) {
     if (this->_has_log_level(log_t::FERR) && this->_has_topic(topic)) {
-        _out << topic << std::setfill(' ') << std::setw(6) << "FERR" << ": ";
+        if (!multiline)
+            _out << topic << std::setfill(' ') << std::setw(6) << "FERR" << ": ";
         return _out;
     }
     return null_log;
@@ -63,9 +64,10 @@ std::ostream& _Log::fatal_error(const std::string& topic) {
 void _Log::error(const std::string& topic, const std::string& message) {
     this->error(topic) << message << std::endl;
 }
-std::ostream& _Log::error(const std::string& topic) {
+std::ostream& _Log::error(const std::string& topic, bool multiline) {
     if (this->_has_log_level(log_t::ERR) && this->_has_topic(topic)) {
-        _out << topic << std::setfill(' ') << std::setw(6) << "ERR" << ": ";
+        if (!multiline)
+            _out << topic << std::setfill(' ') << std::setw(6) << "ERR" << ": ";
         return _out;
     }
     return null_log;
@@ -75,9 +77,10 @@ void _Log::info(const std::string& topic, const std::string& message) {
     this->info(topic) << message << std::endl;
 }
 
-std::ostream& _Log::info(const std::string& topic) {
+std::ostream& _Log::info(const std::string& topic, bool multiline) {
     if (this->_has_log_level(log_t::INFO) && this->_has_topic(topic)) {
-        _out << topic << std::setfill(' ') << std::setw(6) << "INFO" << ": ";
+        if (!multiline)
+            _out << topic << std::setfill(' ') << std::setw(6) << "INFO" << ": ";
         return _out;
     }
     return null_log;
@@ -87,9 +90,10 @@ void _Log::warn(const std::string& topic, const std::string& message) {
     this->warn(topic) << message << std::endl;
 }
 
-std::ostream& _Log::warn(const std::string& topic) {
+std::ostream& _Log::warn(const std::string& topic, bool multiline) {
     if (this->_has_log_level(log_t::WARN) && this->_has_topic(topic)) {
-        _out << topic << std::setfill(' ') << std::setw(6) << "WARN" << ": ";
+        if (!multiline)
+            _out << topic << std::setfill(' ') << std::setw(6) << "WARN" << ": ";
         return _out;
     }
     return null_log;
@@ -99,9 +103,10 @@ void _Log::debug(const std::string& topic, const std::string& message) {
     this->debug(topic) << message << std::endl;
 }
 
-std::ostream& _Log::debug(const std::string& topic) {
+std::ostream& _Log::debug(const std::string& topic, bool multiline) {
     if (this->_has_log_level(log_t::DEBUG) && this->_has_topic(topic)) {
-        _out << topic << std::setfill(' ') << std::setw(6) << "DEBUG" << ": ";
+        if (!multiline)
+            _out << topic << std::setfill(' ') << std::setw(6) << "DEBUG" << ": ";
         return _out;
     }
     return null_log;
diff --git a/xs/src/libslic3r/Log.hpp b/xs/src/libslic3r/Log.hpp
index 81a42bacb..74a9eca6a 100644
--- a/xs/src/libslic3r/Log.hpp
+++ b/xs/src/libslic3r/Log.hpp
@@ -42,21 +42,21 @@ public:
     }
     void fatal_error(const std::string& topic, const std::string& message);
     void fatal_error(const std::string& topic, const std::wstring& message);
-    std::ostream& fatal_error(const std::string& topic);
+    std::ostream& fatal_error(const std::string& topic, bool multiline = false);
 
     void error(const std::string& topic, const std::string& message);
     void error(const std::string& topic, const std::wstring& message);
-    std::ostream& error(const std::string& topic);
+    std::ostream& error(const std::string& topic, bool multiline = false);
 
     void info(const std::string& topic, const std::string& message);
     void info(const std::string& topic, const std::wstring& message);
-    std::ostream& info(const std::string& topic);
+    std::ostream& info(const std::string& topic, bool multiline = false);
     void debug(const std::string& topic, const std::string& message);
     void debug(const std::string& topic, const std::wstring& message);
-    std::ostream& debug(const std::string& topic);
+    std::ostream& debug(const std::string& topic, bool multiline = false);
     void warn(const std::string& topic, const std::string& message);
     void warn(const std::string& topic, const std::wstring& message);
-    std::ostream& warn(const std::string& topic);
+    std::ostream& warn(const std::string& topic, bool multiline = false);
     void raw(const std::string& message);
     void raw(const std::wstring& message);
     std::ostream& raw();
@@ -159,32 +159,36 @@ public:
 
     /// Logs an error message with Slic3r.
     /// \param topic [in] file or heading for message
+    /// \param multiline [in] Is this a following part of a multline output (default False)
     /// \return reference to output ostream for << chaining.
     /// \note Developer is expected to add newlines.
-    static std::ostream& error(std::string topic) {
-        return slic3r_log->error(topic);
+    static std::ostream& error(std::string topic, bool multiline = false) {
+        return slic3r_log->error(topic, multiline);
     }
     /// Logs a debugging message with Slic3r.
     /// \param topic [in] file or heading for message
+    /// \param multiline [in] Is this a following part of a multline output (default False)
     /// \return reference to output ostream for << chaining.
     /// \note Developer is expected to add newlines.
-    static std::ostream& debug(std::string topic) {
-        return slic3r_log->debug(topic);
+    static std::ostream& debug(std::string topic, bool multiline = false) {
+        return slic3r_log->debug(topic, multiline);
     }
 
     /// Logs a warning message with Slic3r.
     /// \param topic [in] file or heading for message
+    /// \param multiline [in] Is this a following part of a multline output (default False)
     /// \return reference to output ostream for << chaining.
     /// \note Developer is expected to add newlines.
-    static std::ostream& warn(std::string topic) {
-        return slic3r_log->warn(topic);
+    static std::ostream& warn(std::string topic, bool multiline = false) {
+        return slic3r_log->warn(topic, multiline);
     }
     /// Logs an informational message with Slic3r.
     /// \param topic [in] file or heading for message
+    /// \param multiline [in] Is this a following part of a multline output (default False)
     /// \return reference to output ostream for << chaining.
     /// \note Developer is expected to add newlines.
-    static std::ostream& info(std::string topic) {
-        return slic3r_log->info(topic);
+    static std::ostream& info(std::string topic, bool multiline = false) {
+        return slic3r_log->info(topic, multiline);
     }
 
     /// Unadorned ostream output for multiline constructions.