diff --git a/Quake/cvar.c b/Quake/cvar.c
index d034257a..9cf0d5a3 100644
--- a/Quake/cvar.c
+++ b/Quake/cvar.c
@@ -379,7 +379,7 @@ Cvar_RegisterVariable
 Adds a freestanding variable to the variable list.
 ============
 */
-void Cvar_RegisterVariable (cvar_t *variable, void *function)
+void Cvar_RegisterVariable (cvar_t *variable, cvarcallback_t function)
 {
 	char	*oldstr;
 	cvar_t	*cursor,*prev; //johnfitz -- sorted list insert
@@ -431,7 +431,7 @@ void Cvar_RegisterVariable (cvar_t *variable, void *function)
     }
 	//johnfitz
 
-	variable->callback = (cvarcallback_t) function; //johnfitz
+	variable->callback = function; //johnfitz
 }
 
 /*
diff --git a/Quake/cvar.h b/Quake/cvar.h
index 8d4e6c15..fe5c229b 100644
--- a/Quake/cvar.h
+++ b/Quake/cvar.h
@@ -72,7 +72,7 @@ typedef struct cvar_s
 	cvarcallback_t callback; //johnfitz
 } cvar_t;
 
-void 	Cvar_RegisterVariable (cvar_t *variable, void *function); //johnfitz -- cvar callback
+void 	Cvar_RegisterVariable (cvar_t *variable, cvarcallback_t function); //johnfitz -- cvar callback
 // registers a cvar that allready has the name, string, and optionally the
 // archive elements set.