diff --git a/funcs/qsortrgb.c b/funcs/qsortrgb.c
index dd801f8..9a60153 100644
--- a/funcs/qsortrgb.c
+++ b/funcs/qsortrgb.c
@@ -9,7 +9,7 @@
 
 #include   "../floatimg.h"
 
-int		verbosity;
+extern int		verbosity;
 
 /* --------------------------------------------------------------------- */
 /* nouveau 7 octobre 2020, juste avant sonoptic de la pluie craignos	 */