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-rw-r--r--w32/compat/posixfcn.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/w32/compat/posixfcn.c b/w32/compat/posixfcn.c
index 627fc50..cde81ce 100644
--- a/w32/compat/posixfcn.c
+++ b/w32/compat/posixfcn.c
@@ -26,7 +26,7 @@ this program. If not, see <http://www.gnu.org/licenses/>. */
#include "makeint.h"
#include "job.h"
-#ifdef NO_OUTPUT_SYNC
+#ifndef NO_OUTPUT_SYNC
/* Support for OUTPUT_SYNC and related functionality. */
/* Emulation of fcntl that supports only F_GETFD and F_SETLKW. */