diff --git a/scripts/mkimage.c b/scripts/mkimage.c
index 891d7b6..7d283c5 100644
--- a/scripts/mkimage.c
+++ b/scripts/mkimage.c
@@ -572,7 +572,11 @@
 	}
 
 	/* We're a bit of paranoid */
-#if defined(_POSIX_SYNCHRONIZED_IO) && !defined(__sun__) && !defined(__FreeBSD__)
+#if defined(_POSIX_SYNCHRONIZED_IO) && \
+   !defined(__sun__) && \
+   !defined(__FreeBSD__) && \
+   !defined(__OpenBSD__) && \
+   !defined(__APPLE__)
 	(void) fdatasync (ifd);
 #else
 	(void) fsync (ifd);
@@ -622,7 +626,11 @@
 	(void) munmap((void *)ptr, sbuf.st_size);
 
 	/* We're a bit of paranoid */
-#if defined(_POSIX_SYNCHRONIZED_IO) && !defined(__sun__) && !defined(__FreeBSD__)
+#if defined(_POSIX_SYNCHRONIZED_IO) && \
+   !defined(__sun__) && \
+   !defined(__FreeBSD__) && \
+   !defined(__OpenBSD__) && \
+   !defined(__APPLE__)
 	(void) fdatasync (ifd);
 #else
 	(void) fsync (ifd);