diff --git a/example/ck_tile/04_img2col/image_to_column.cpp b/example/ck_tile/04_img2col/image_to_column.cpp
index 6380cd2994..388fcf5137 100644
--- a/example/ck_tile/04_img2col/image_to_column.cpp
+++ b/example/ck_tile/04_img2col/image_to_column.cpp
@@ -149,9 +149,16 @@ int main(int argc, char* argv[])
     float ave_time =
         image_to_column(traits, args, ck_tile::stream_config{nullptr, config.time_kernel});
 
-    std::size_t num_btype = G * NHoWo * CYX * (sizeof(OutDataType) + sizeof(InDataType));
-    float gb_per_sec      = num_btype / 1.E6 / ave_time;
-    std::cout << "Perf: " << ave_time << " ms, " << gb_per_sec << " GB/s" << std::endl;
+    if (config.time_kernel)
+    {
+        std::size_t num_btype = G * NHoWo * CYX * (sizeof(OutDataType) + sizeof(InDataType));
+        float gb_per_sec      = num_btype / 1.E6 / ave_time;
+        std::cout << "Perf: " << ave_time << " ms, " << gb_per_sec << " GB/s" << std::endl;
+    }
+    else
+    {
+        std::cout << "image_to_column: pass, No Perf generated due to config.time_kernel=0" << std::endl;
+    }
 
     bool pass = true;