diff --git a/src/libstrongswan/threading/semaphore.h b/src/libstrongswan/threading/semaphore.h
index cdb0a6f19..34d814971 100644
--- a/src/libstrongswan/threading/semaphore.h
+++ b/src/libstrongswan/threading/semaphore.h
@@ -21,6 +21,11 @@
 #ifndef THREADING_SEMAPHORE_H_
 #define THREADING_SEMAPHORE_H_
 
+#ifdef __APPLE__
+/* Mach uses a semaphore_create() call, use a different name for ours */
+#define semaphore_create(x) strongswan_semaphore_create(x)
+#endif /* __APPLE__ */
+
 typedef struct semaphore_t semaphore_t;
 
 /**