diff --git a/code/qcommon/cvar.c b/code/qcommon/cvar.c
index d0a90e7e..bae4154e 100644
--- a/code/qcommon/cvar.c
+++ b/code/qcommon/cvar.c
@@ -1210,9 +1210,9 @@ void	Cvar_Update( vmCvar_t *vmCvar ) {
 	}
 	vmCvar->modificationCount = cv->modificationCount;
 	if ( strlen(cv->string)+1 > MAX_CVAR_VALUE_STRING ) 
-	  Com_Error( ERR_DROP, "Cvar_Update: src %s length %d exceeds MAX_CVAR_VALUE_STRING",
+	  Com_Error( ERR_DROP, "Cvar_Update: src %s length %u exceeds MAX_CVAR_VALUE_STRING",
 		     cv->string, 
-		     strlen(cv->string));
+		     (unsigned int) strlen(cv->string));
 	Q_strncpyz( vmCvar->string, cv->string,  MAX_CVAR_VALUE_STRING ); 
 
 	vmCvar->value = cv->value;