diff --git a/src/MinedMap.cpp b/src/MinedMap.cpp
index e4993a0..ddb165a 100644
--- a/src/MinedMap.cpp
+++ b/src/MinedMap.cpp
@@ -195,7 +195,12 @@ static int64_t getModTime(const std::string &file) {
 #ifdef _WIN32
 	return (int64_t)s.st_mtime * 1000000;
 #else
-	return (int64_t)s.st_mtim.tv_sec * 1000000 + s.st_mtim.tv_nsec / 1000;
+    #ifdef __APPLE__
+        // stat.h syntax has changed on MacOSX SDK since at least 11.3
+        return (int64_t)s.st_mtimespec.tv_sec * 1000000 + s.st_mtimespec.tv_nsec / 1000;
+    #else
+        return (int64_t)s.st_mtim.tv_sec * 1000000 + s.st_mtim.tv_nsec / 1000;
+    #endif
 #endif
 }