diff --git a/httplib.h b/httplib.h
index 303d63f..1985123 100644
--- a/httplib.h
+++ b/httplib.h
@@ -134,6 +134,7 @@ using socket_t = int;
 #include <array>
 #include <atomic>
 #include <cassert>
+#include <climits>
 #include <condition_variable>
 #include <errno.h>
 #include <fcntl.h>
@@ -174,7 +175,6 @@ inline const unsigned char *ASN1_STRING_get0_data(const ASN1_STRING *asn1) {
 #ifdef CPPHTTPLIB_ZLIB_SUPPORT
 #include <zlib.h>
 #endif
-
 /*
  * Declaration
  */