diff --git a/.github/workflows/cmake_manualbuild_ocv3416.yml b/.github/workflows/cmake_manualbuild_ocv3416.yml
index 02f6f13704..6623c9d518 100644
--- a/.github/workflows/cmake_manualbuild_ocv3416.yml
+++ b/.github/workflows/cmake_manualbuild_ocv3416.yml
@@ -1,6 +1,7 @@
 name: CMake manual build on OpenCV 3.4.16
 
-on: workflow_call
+on:
+  workflow_dispatch: {}
 
 env:
   # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)