diff --git a/configure.ac b/configure.ac
index 4b034f83..3d5b15eb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -262,6 +262,7 @@ EXTRA_WARNINGS=""
 
 WARNLIST="
 	all
+	shadow
 	missing-prototypes
 	missing-declarations
 	strict-prototypes