diff --git a/source/use_case/kws_asr/src/MainLoop.cc b/source/use_case/kws_asr/src/MainLoop.cc
index ed9034f..d5a2c2b 100644
--- a/source/use_case/kws_asr/src/MainLoop.cc
+++ b/source/use_case/kws_asr/src/MainLoop.cc
@@ -161,6 +161,7 @@
             case MENU_OPT_RUN_INF_CHOSEN: {
                 printf("    Enter the audio clip index [0, %d]: ",
                        NUMBER_OF_FILES-1);
+                fflush(stdout);
                 auto clipIndex = static_cast<uint32_t>(
                         arm::app::ReadUserInputAsInt(platform));
                 executionSuccessful = ClassifyAudioHandler(caseContext,