diff --git a/configure b/configure
index 81c43403..d72d8fc0 100755
--- a/configure
+++ b/configure
@@ -221,7 +221,7 @@ if $VALID ; then
 
 	if [ -n "$DEBUG" ];
 	then
-		if [ "$DEBUG" = "y" || "$DEBUG" = "Y" ];
+		if [ "$DEBUG" = "y" ] || [ "$DEBUG" = "Y" ];
 		then
 			appop="-O0 -g"
 			libop="-O0 -g"