diff --git a/regression-tests/sphere_in_channel_test.sh b/regression-tests/sphere_in_channel_test.sh
index 788a5df531e2f5ed3c3df0c5b8a21a0eebe15121..e416d535d274537d008a442435f66a38dd69fac1 100644
--- a/regression-tests/sphere_in_channel_test.sh
+++ b/regression-tests/sphere_in_channel_test.sh
@@ -1,3 +1,5 @@
+#!/bin/bash
+
 source ./regression-tests/__regression_test_executer.sh
 
 # 1. set reference data directory (must match the folder structure in https://github.com/irmb/test_data)
@@ -14,3 +16,5 @@ RESULT_DATA_DIR=output/Sphere
 
 
 run_regression_test "$REFERENCE_DATA_DIR" "$CMAKE_FLAGS" "$APPLICATION" "$RESULT_DATA_DIR"
+
+# fieldcompare dir output/Sphere reference_data/regression_tests/gpu/SphereInChannel --include-files "*.vtu"
\ No newline at end of file