diff --git a/libnxwidgets/src/cnxserver.cxx b/libnxwidgets/src/cnxserver.cxx
index d5d499e67..69e1d874c 100644
--- a/libnxwidgets/src/cnxserver.cxx
+++ b/libnxwidgets/src/cnxserver.cxx
@@ -481,7 +481,7 @@ FAR void *CNxServer::listener(FAR void *arg)
 
   CNxServer *This = (CNxServer*)arg;
 
-#ifdef CONFIG_TASK_NAME_SIZE > 0
+#if CONFIG_TASK_NAME_SIZE > 0
   prctl(PR_SET_NAME, "CNxServer::listener", 0);
 #endif