diff --git a/configure b/configure
index 6b5b0d5..0be3f84 100755
--- a/configure
+++ b/configure
@@ -13,7 +13,7 @@ crammd5="yes"
incdirs="-I/usr/local/include"
libdirs="-L/usr/local/lib"
-mycflags="$CFLAGS -Wall -O"
+mycflags="$CFLAGS -Wall"
myldflags="$LDFLAGS"
libs="-lm -llua -lpcre"