diff --git a/3rdparty/fonts/fnt.cxx b/3rdparty/fonts/fnt.cxx
index f340e28..51d8468 100644
--- a/3rdparty/fonts/fnt.cxx
+++ b/3rdparty/fonts/fnt.cxx
@@ -182,7 +182,7 @@ void fntTexFont::getBBox ( const char *s,
     }
 
 //    unsigned int cc = (unsigned char) *(s++) ;
-    unsigned int cc = (unsigned int) *(s++) ;
+    unsigned int cc = (unsigned char) *(s++) ;
 
     SG_LOG(SG_GUI,SG_ALERT, "cc=" << cc);