diff --git a/libavutil/internal.h b/libavutil/internal.h
index 37bc6810f6..e890ae7083 100644
--- a/libavutil/internal.h
+++ b/libavutil/internal.h
@@ -137,6 +137,8 @@
 #define sprintf sprintf_is_forbidden_due_to_security_issues_use_snprintf
 #undef  strcat
 #define strcat strcat_is_forbidden_due_to_security_issues_use_av_strlcat
+#undef  strncpy
+#define strncpy strncpy_is_forbidden_due_to_security_issues_use_av_strlcpy
 #undef  exit
 #define exit exit_is_forbidden
 #ifndef LIBAVFORMAT_BUILD