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-rw-r--r--boost/signals2/mutex.hpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/boost/signals2/mutex.hpp b/boost/signals2/mutex.hpp
index cb35bdf26d..e58aca1c96 100644
--- a/boost/signals2/mutex.hpp
+++ b/boost/signals2/mutex.hpp
@@ -18,7 +18,7 @@
// MS compatible compilers support #pragma once
-#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+#if defined(_MSC_VER)
# pragma once
#endif