diff --git a/funcs/filtrage.c b/funcs/filtrage.c
index bd6b4183..caec0c95 100644
--- a/funcs/filtrage.c
+++ b/funcs/filtrage.c
@@ -17,7 +17,7 @@ float		*M;			/* alias of filter matrix */
 double		dval;
 
 #if DEBUG_LEVEL
-fprintf(stderr, ">>> %s ( %p %p %p)\n", __func__, s, d, filtr);
+fprintf(stderr, ">>> %s ( %p %p %p)\n", __func__, src, dst, filtr);
 #endif
 
 /*	aliasing some vars for cleaner code */