diff --git a/CommonPythonCTest.cmake b/CommonPythonCTest.cmake
index dd76edf..0c5b397 100644
--- a/CommonPythonCTest.cmake
+++ b/CommonPythonCTest.cmake
@@ -17,7 +17,7 @@ set(PYTHON_TEST_OUTPUT_PATH ${PROJECT_BINARY_DIR}/tests/python)
 
 file(GLOB_RECURSE TEST_FILES ${CMAKE_CURRENT_SOURCE_DIR} *.py)
 foreach(FILE ${PYTHON_TEST_EXCLUDE})
-  list(REMOVE_ITEM TEST_FILES ${FILE})
+  list(REMOVE_ITEM TEST_FILES ${CMAKE_CURRENT_SOURCE_DIR}/${FILE})
 endforeach()
 list(SORT TEST_FILES)