diff --git a/.travis/run.sh b/.travis/run.sh
index e31448b..afa1702 100755
--- a/.travis/run.sh
+++ b/.travis/run.sh
@@ -8,6 +8,8 @@ if [ "$CC" = "clang" ]; then
 	CFLAGS="$CFLAGS -Wno-error=unused-command-line-argument -Wno-error=unused-function"
 fi
 
+CFLAGS="$CFLAGS -DNL_MORE_ASSERTS=1000"
+
 export CFLAGS
 ./autogen.sh
 ./configure