diff --git a/Tools/unix/uz80as/uz80as.h b/Tools/unix/uz80as/uz80as.h
index 511da085..19e71764 100644
--- a/Tools/unix/uz80as/uz80as.h
+++ b/Tools/unix/uz80as/uz80as.h
@@ -8,7 +8,7 @@
 #ifndef UZ80AS_H
 #define UZ80AS_H
 
-int verbose;
+static int verbose;
 
 /* matchtab.flags */
 enum {