diff --git a/apps/traincascade/cascadeclassifier.cpp b/apps/traincascade/cascadeclassifier.cpp
index 341647cddc..3d7b383258 100644
--- a/apps/traincascade/cascadeclassifier.cpp
+++ b/apps/traincascade/cascadeclassifier.cpp
@@ -341,6 +341,7 @@ int CvCascadeClassifier::fillPassedSamples( int first, int count, bool isPositiv
             {
                 getcount++;
                 printf("%s current samples: %d\r", isPositive ? "POS":"NEG", getcount);
+                fflush(stdout);
                 break;
             }
         }