diff --git a/httplib.h b/httplib.h
index ab8897a..1788c85 100644
--- a/httplib.h
+++ b/httplib.h
@@ -132,7 +132,7 @@
 #ifdef _WIN64
 using ssize_t = __int64;
 #else
-using ssize_t = int;
+using ssize_t = long;
 #endif
 #endif // _MSC_VER