diff --git a/src/plugin.c b/src/plugin.c
index dfe2b342..536cb705 100644
--- a/src/plugin.c
+++ b/src/plugin.c
@@ -223,6 +223,7 @@ int
 is_plugin_running()
 {
     FATAL("Plugin is not supported on MinGW.");
+    return 0;
 }
 
 #endif