diff --git a/modules/highgui/src/cap_ffmpeg.cpp b/modules/highgui/src/cap_ffmpeg.cpp
index 3b6b862d05..eb468c2343 100644
--- a/modules/highgui/src/cap_ffmpeg.cpp
+++ b/modules/highgui/src/cap_ffmpeg.cpp
@@ -48,8 +48,7 @@
 extern "C" {
 #if !defined(WIN32) || defined(__MINGW32__)
 // some versions of FFMPEG assume a C99 compiler, and don't define INT64_C
-#ifndef INT64_C
-#define INT64_C
+#if !defined INT64_C || !defined UINT64_C
 #define __STDC_CONSTANT_MACROS
 // force re-inclusion of stdint.h to get INT64_C macro
 #undef _STDINT_H