kc3-lang/kc3

diff --git a/test/configure b/test/configure
index bc75da0..93c2729 100755
--- a/test/configure
+++ b/test/configure
@@ -83,7 +83,7 @@ LOCAL_LIBS_DEBUG="$LIBKC3_DEBUG"
 LIBS_DEBUG="$LOCAL_LIBS_DEBUG $LIBS"
 
 # Main config
-DEFAULT_CFLAGS="-Oz -pipe -fPIC"
+DEFAULT_CFLAGS="-Os -pipe -fPIC"
 if [ "x$ENV_CFLAGS" = "x" ]; then
     CFLAGS="$CFLAGS $DEFAULT_CFLAGS"
 fi