diff --git a/src/FbTk/Font.hh b/src/FbTk/Font.hh
index d3220974..6b25a840 100644
--- a/src/FbTk/Font.hh
+++ b/src/FbTk/Font.hh
@@ -63,7 +63,7 @@ public:
 
 
 
-    Font(const char *name = "fixed");
+    explicit Font(const char *name = "fixed");
     virtual ~Font();
     /**
         Load a font