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-rw-r--r--ace/config-mit-pthread.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/ace/config-mit-pthread.h b/ace/config-mit-pthread.h
index 010b8f7c0ca..f3341669a74 100644
--- a/ace/config-mit-pthread.h
+++ b/ace/config-mit-pthread.h
@@ -1,6 +1,6 @@
// $Id$
-#if !defined (ACE_CONFIG_MIT_PTHREAD_H)
+#ifndef ACE_CONFIG_MIT_PTHREAD_H
#define ACE_CONFIG_MIT_PTHREAD_H
// Platform uses int for select() rather than fd_set.