diff --git a/src/fontcache.cpp b/src/fontcache.cpp
index e59104ac69..2a0a96bd86 100644
--- a/src/fontcache.cpp
+++ b/src/fontcache.cpp
@@ -37,6 +37,8 @@ enum {
 	SHADOW_COLOUR = 2,
 };
 
+static const int ASCII_LETTERSTART = 32; ///< First printable ASCII letter.
+
 /** Get the font loaded into a Freetype face by using a font-name.
  * If no appropiate font is found, the function returns an error */
 #ifdef WIN32
diff --git a/src/gfx_func.h b/src/gfx_func.h
index 1831f56964..dd7693f93a 100644
--- a/src/gfx_func.h
+++ b/src/gfx_func.h
@@ -146,7 +146,6 @@ void SortResolutions(int count);
 bool ToggleFullScreen(bool fs);
 
 /* gfx.cpp */
-#define ASCII_LETTERSTART 32
 extern FontSize _cur_fontsize;
 
 byte GetCharacterWidth(FontSize size, uint32 key);