diff --git a/library/NS_Emulation.ttcnpp b/library/NS_Emulation.ttcnpp
index 19de9d3..2e03880 100644
--- a/library/NS_Emulation.ttcnpp
+++ b/library/NS_Emulation.ttcnpp
@@ -382,6 +382,8 @@
 			connect(self:NSCP, vc_NSP_FR:NSE);
 			vc_NSP_FR.start(NS_Provider_FR.main(g_nsvc_config, g_config, id));
 #endif
+		} else {
+			Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, "Unsupported NS provider");
 		}
 
 		f_change_state(NSVC_S_DEAD_BLOCKED);