diff --git a/tests/nativenet/main.c b/tests/nativenet/main.c
index aa32a0656d..ddc0d96399 100644
--- a/tests/nativenet/main.c
+++ b/tests/nativenet/main.c
@@ -96,6 +96,8 @@ void *radio(void *arg)
             puts("Unknown packet received");
         }
     }
+
+    return NULL;
 }
 
 void sender(void)