diff --git a/tools/srp_shared.c b/tools/srp_shared.c
index f782126..23e82a5 100644
--- a/tools/srp_shared.c
+++ b/tools/srp_shared.c
@@ -173,7 +173,11 @@ void user_verifier_lookup(char * username,
 	if (stat(srpfile, &buf) != 0)
 		return;
 
+#if defined(__APPLE__)
+	*generation = ((uint64_t)buf.st_mtimespec.tv_sec << 32) | buf.st_mtimespec.tv_nsec;
+#else
 	*generation = ((uint64_t)buf.st_mtim.tv_sec << 32) | buf.st_mtim.tv_nsec;
+#endif
 #endif
 
 	if (!lookup_data || !hashversion)