diff --git a/extern/SConscript b/extern/SConscript
index 0be34630600..924b7f54507 100644
--- a/extern/SConscript
+++ b/extern/SConscript
@@ -14,5 +14,5 @@ if env['WITH_BF_INTERNATIONAL']:
 if env['WITH_BF_VERSE']:
     SConscript(['verse/dist/SConstruct'])
 
-if env['WITH_BF_FFMPEG']:
+if env['WITH_BF_FFMPEG'] and env['BF_FFMPEG_LIB'] == '':
     SConscript(['ffmpeg/SConscript']);