diff --git a/multimedia/ffmpeg6/Portfile b/multimedia/ffmpeg6/Portfile
index e19796d72d85d..92ea7b457fdea 100644
--- a/multimedia/ffmpeg6/Portfile
+++ b/multimedia/ffmpeg6/Portfile
@@ -323,9 +323,11 @@ platform darwin {
 
 # libavcodec/pcm-bluray.c:172:45: error: passing argument 2 of 'bytestream2_get_buffer' from incompatible pointer type [-Wincompatible-pointer-types]
 # libavcodec/pcm-dvd.c:155:37: error: passing argument 2 of 'bytestream2_get_buffer' from incompatible pointer type [-Wincompatible-pointer-types]
+# vulkan_av1.c:216:43: error: initialization of 'long long unsigned int' from 'void *' makes integer from pointer without a cast [-Wint-conversion]
 if {[string match *gcc* ${configure.compiler}]} {
     configure.cflags-append \
-                    -Wno-error=incompatible-pointer-types
+                    -Wno-error=incompatible-pointer-types \
+                    -Wno-error=int-conversion
 }
 
 platform powerpc {