diff --git a/src/slic3r/GUI/Gizmos/GLGizmoEmboss.cpp b/src/slic3r/GUI/Gizmos/GLGizmoEmboss.cpp
index b00d4843e6..3220ce07d4 100644
--- a/src/slic3r/GUI/Gizmos/GLGizmoEmboss.cpp
+++ b/src/slic3r/GUI/Gizmos/GLGizmoEmboss.cpp
@@ -2251,7 +2251,7 @@ void GLGizmoEmboss::store_font_list_to_app_config()
 
 std::string GLGizmoEmboss::get_file_name(const std::string &file_path)
 {
-    size_t pos_last_delimiter = file_path.find_last_of('\\');
+    size_t pos_last_delimiter = file_path.find_last_of("/\\");
     size_t pos_point          = file_path.find_last_of('.');
     size_t offset             = pos_last_delimiter + 1;
     size_t count              = pos_point - pos_last_delimiter - 1;
diff --git a/src/slic3r/Utils/FontManager.cpp b/src/slic3r/Utils/FontManager.cpp
index 09c6ea5fa0..47ca3dbb88 100644
--- a/src/slic3r/Utils/FontManager.cpp
+++ b/src/slic3r/Utils/FontManager.cpp
@@ -106,7 +106,7 @@ bool FontManager::load_font(size_t font_index, const wxFont &font)
 
 static std::string get_file_name(const std::string &file_path)
 {
-    size_t pos_last_delimiter = file_path.find_last_of('\\');
+    size_t pos_last_delimiter = file_path.find_last_of("/\\");
     size_t pos_point          = file_path.find_last_of('.');
     size_t offset             = pos_last_delimiter + 1;
     size_t count              = pos_point - pos_last_delimiter - 1;