diff --git a/src/gtk/radiobox.cpp b/src/gtk/radiobox.cpp
index cb60031d25..1871c04a4a 100644
--- a/src/gtk/radiobox.cpp
+++ b/src/gtk/radiobox.cpp
@@ -166,7 +166,7 @@ wxSize wxRadioBox::LayoutItems()
     if ( m_majorDim == 0 )
     {
         // avoid dividing by 0 below
-        wxFAIL_MSG( "dimension of radiobox should not be 0!" );
+        wxFAIL_MSG( _T("dimension of radiobox should not be 0!") );
 
         m_majorDim = 1;
     }
diff --git a/src/gtk/statbmp.cpp b/src/gtk/statbmp.cpp
index bcc8025927..98c62d2447 100644
--- a/src/gtk/statbmp.cpp
+++ b/src/gtk/statbmp.cpp
@@ -37,7 +37,7 @@ wxStaticBitmap::wxStaticBitmap( wxWindow *parent, wxWindowID id, const wxBitmap
 
 void wxStaticBitmap::CreatePixmapWidget()
 {
-    wxCHECK_RET( m_bitmap.Ok(), "should only be called if we have a bitmap" );
+    wxCHECK_RET( m_bitmap.Ok(), _T("should only be called if we have a bitmap") );
 
     GdkBitmap *mask = (GdkBitmap *) NULL;
     if ( m_bitmap.GetMask() )
diff --git a/src/gtk1/radiobox.cpp b/src/gtk1/radiobox.cpp
index cb60031d25..1871c04a4a 100644
--- a/src/gtk1/radiobox.cpp
+++ b/src/gtk1/radiobox.cpp
@@ -166,7 +166,7 @@ wxSize wxRadioBox::LayoutItems()
     if ( m_majorDim == 0 )
     {
         // avoid dividing by 0 below
-        wxFAIL_MSG( "dimension of radiobox should not be 0!" );
+        wxFAIL_MSG( _T("dimension of radiobox should not be 0!") );
 
         m_majorDim = 1;
     }
diff --git a/src/gtk1/statbmp.cpp b/src/gtk1/statbmp.cpp
index bcc8025927..98c62d2447 100644
--- a/src/gtk1/statbmp.cpp
+++ b/src/gtk1/statbmp.cpp
@@ -37,7 +37,7 @@ wxStaticBitmap::wxStaticBitmap( wxWindow *parent, wxWindowID id, const wxBitmap
 
 void wxStaticBitmap::CreatePixmapWidget()
 {
-    wxCHECK_RET( m_bitmap.Ok(), "should only be called if we have a bitmap" );
+    wxCHECK_RET( m_bitmap.Ok(), _T("should only be called if we have a bitmap") );
 
     GdkBitmap *mask = (GdkBitmap *) NULL;
     if ( m_bitmap.GetMask() )