diff --git a/src/test/resources/ContactWithEmptyString.yang b/src/test/resources/ContactWithEmptyString.yang
new file mode 100644
index 0000000..34c6008
--- /dev/null
+++ b/src/test/resources/ContactWithEmptyString.yang
@@ -0,0 +1,7 @@
+module Test {
+yang-version 1;
+namespace urn:ietf:params:xml:ns:yang:ietf-ospf;
+prefix On;
+organization "IETF SPRING Working Group";
+contact;
+}