diff --git a/modules/video/src/lkpyramid.cpp b/modules/video/src/lkpyramid.cpp
index d568709e9b..139eda670b 100644
--- a/modules/video/src/lkpyramid.cpp
+++ b/modules/video/src/lkpyramid.cpp
@@ -713,7 +713,7 @@ namespace cv
             int idxNew = kernel.set(idx, arg);\
             if (-1 == idxNew)\
             {\
-                printf("lkSparse_run can't setup argument index = %d to kernel\n");\
+                printf("lkSparse_run can't setup argument index = %d to kernel\n", idx);\
                 return false;\
             }\
             idx = idxNew;\