kc3-lang/kc3

diff --git a/libc3/configure b/libc3/configure
index c8d6a6b..3b4bb90 100755
--- a/libc3/configure
+++ b/libc3/configure
@@ -39,7 +39,7 @@ LDFLAGS="${LDFLAGS:=}"
 LIBS="${LIBS:=-lm}"
 
 # Common config for all targets
-CFLAGS="$CFLAGS -W -Wall -Werror -std=c89 -pedantic"
+CFLAGS="$CFLAGS -W -Wall -Werror -std=c99 -pedantic"
 config_asan
 config_gnu
 pkg_config libbsd-overlay