diff --git a/lrzip_private.h b/lrzip_private.h
index 4439621..6e3795b 100644
--- a/lrzip_private.h
+++ b/lrzip_private.h
@@ -90,8 +90,7 @@ typedef uint32_t u32;
 typedef struct rzip_control rzip_control;
 typedef struct md5_ctx md5_ctx;
 
-#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || \
-	defined(__APPLE__) || defined(__CYGWIN__)
+#if !defined(__linux)
  #define mremap fake_mremap
 #endif