diff --git a/test/api/encode_decode_api_test.cpp b/test/api/encode_decode_api_test.cpp
index 5b78b92a..d83b7e2e 100644
--- a/test/api/encode_decode_api_test.cpp
+++ b/test/api/encode_decode_api_test.cpp
@@ -244,7 +244,7 @@ void EncodeDecodeTestAPI::RandomParamExtCombination() {
   param_.iLtrMarkPeriod            = rand();
 
   //loop filter
-  param_.iLoopFilterDisableIdc     = rand();
+  param_.iLoopFilterDisableIdc     = rand() % 7;
   param_.iLoopFilterAlphaC0Offset  = rand();
   param_.iLoopFilterBetaOffset     = rand();