diff --git a/acinclude.m4 b/acinclude.m4
index 84c10818..ac29c2bb 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -22,5 +22,6 @@ AC_DEFUN([COMPILER_FLAGS], [
 		CFLAGS="$CFLAGS -Wmissing-declarations"
 		CFLAGS="$CFLAGS -Wredundant-decls"
 		CFLAGS="$CFLAGS -Wcast-align"
+		CFLAGS="$CFLAGS -DG_DISABLE_DEPRECATED"
 	fi
 ])