diff --git a/exec.c b/exec.c
index b69fd295f9..680268a163 100644
--- a/exec.c
+++ b/exec.c
@@ -17,9 +17,7 @@
  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  */
 #include "config.h"
-#ifdef _WIN32
-#include <windows.h>
-#else
+#ifndef _WIN32
 #include <sys/types.h>
 #include <sys/mman.h>
 #endif