diff --git a/libswresample/swresample-test.c b/libswresample/swresample-test.c
index c0162cd646..694880648a 100644
--- a/libswresample/swresample-test.c
+++ b/libswresample/swresample-test.c
@@ -314,6 +314,11 @@ int main(int argc, char **argv){
             fprintf(stderr, "Failed to init backw_ctx\n");
             return 1;
         }
+        if (uint_rand(rand_seed) % 3 == 0)
+            av_opt_set_int(forw_ctx, "ich", 0, 0);
+        if (uint_rand(rand_seed) % 3 == 0)
+            av_opt_set_int(forw_ctx, "och", 0, 0);
+
         if(swr_init( forw_ctx) < 0)
             fprintf(stderr, "swr_init(->) failed\n");
         if(swr_init(backw_ctx) < 0)