diff --git a/libavutil/common.h b/libavutil/common.h
index e4e6dfa7d7f6b285339203256cbd0a6d497189c0..a1c5927a229e3b73334282bd2f6ff3f6022a4cd6 100644
--- a/libavutil/common.h
+++ b/libavutil/common.h
@@ -104,6 +104,10 @@
 #   endif /* other OS */
 #endif /* EMULATE_INTTYPES */
 
+#ifndef PRIu64
+#define PRIu64 "lld"
+#endif
+
 #ifndef INT16_MIN
 #define INT16_MIN       (-0x7fff-1)
 #endif