diff --git a/include/wx/stc/stc.h b/include/wx/stc/stc.h
index 39de6719eb..fb9041b942 100644
--- a/include/wx/stc/stc.h
+++ b/include/wx/stc/stc.h
@@ -4899,7 +4899,7 @@ public:
 
     // Set style size, face, bold, italic, and underline attributes from
     // a wxFont's attributes.
-    void StyleSetFont(int styleNum, wxFont& font);
+    void StyleSetFont(int styleNum, const wxFont& font);
 
 
 
diff --git a/src/stc/stc.cpp b/src/stc/stc.cpp
index 3f6e29eb14..6e91dc10e9 100644
--- a/src/stc/stc.cpp
+++ b/src/stc/stc.cpp
@@ -4646,7 +4646,7 @@ wxFont wxStyledTextCtrl::StyleGetFont(int style) {
 
 // Set style size, face, bold, italic, and underline attributes from
 // a wxFont's attributes.
-void wxStyledTextCtrl::StyleSetFont(int styleNum, wxFont& font) {
+void wxStyledTextCtrl::StyleSetFont(int styleNum, const wxFont& font) {
 #ifdef __WXGTK__
     // Ensure that the native font is initialized
     int x, y;
diff --git a/src/stc/stc.cpp.in b/src/stc/stc.cpp.in
index d4dfb647c5..995480ca75 100644
--- a/src/stc/stc.cpp.in
+++ b/src/stc/stc.cpp.in
@@ -352,7 +352,7 @@ wxFont wxStyledTextCtrl::StyleGetFont(int style) {
 
 // Set style size, face, bold, italic, and underline attributes from
 // a wxFont's attributes.
-void wxStyledTextCtrl::StyleSetFont(int styleNum, wxFont& font) {
+void wxStyledTextCtrl::StyleSetFont(int styleNum, const wxFont& font) {
 #ifdef __WXGTK__
     // Ensure that the native font is initialized
     int x, y;
diff --git a/src/stc/stc.h.in b/src/stc/stc.h.in
index 6261700f9f..402a8b3298 100644
--- a/src/stc/stc.h.in
+++ b/src/stc/stc.h.in
@@ -152,7 +152,7 @@ public:
 
     // Set style size, face, bold, italic, and underline attributes from
     // a wxFont's attributes.
-    void StyleSetFont(int styleNum, wxFont& font);
+    void StyleSetFont(int styleNum, const wxFont& font);