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-rw-r--r--src/Fl_lock.cxx4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/Fl_lock.cxx b/src/Fl_lock.cxx
index fc6daf8b9..0ec2cf0a5 100644
--- a/src/Fl_lock.cxx
+++ b/src/Fl_lock.cxx
@@ -3,7 +3,7 @@
//
// Multi-threading support code for the Fast Light Tool Kit (FLTK).
//
-// Copyright 1998-2015 by Bill Spitzak and others.
+// Copyright 1998-2016 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
@@ -255,7 +255,7 @@ void Fl::awake(void* msg) {
////////////////////////////////////////////////////////////////
// POSIX threading...
-#elif HAVE_PTHREAD
+#elif defined(HAVE_PTHREAD)
# include <unistd.h>
# include <fcntl.h>
# include <pthread.h>