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-rw-r--r--ace/config-hpux-9.x.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/ace/config-hpux-9.x.h b/ace/config-hpux-9.x.h
index c155b89c1e9..e1f8e0168bc 100644
--- a/ace/config-hpux-9.x.h
+++ b/ace/config-hpux-9.x.h
@@ -4,7 +4,7 @@
// The following configuration file is designed to work
// for HP platforms running HP/UX 9.x.
-#if !defined (ACE_CONFIG_H)
+#ifndef ACE_CONFIG_H
#define ACE_CONFIG_H
// Compiling for HPUX.