diff --git a/Tests/Complex/CMakeLists.txt b/Tests/Complex/CMakeLists.txt
index 568c8d433..7bed23ec0 100644
--- a/Tests/Complex/CMakeLists.txt
+++ b/Tests/Complex/CMakeLists.txt
@@ -24,7 +24,7 @@ SEPARATE_ARGUMENTS(TEST_SEP)
 IF (EXISTS ${Complex_SOURCE_DIR}/VarTests.cmake)
   INCLUDE(${Complex_SOURCE_DIR}/VarTests.cmake)
 ENDIF (EXISTS ${Complex_SOURCE_DIR}/VarTests.cmake)
-
+INCLUDE(fileshouldnotbehere OPTIONAL)
 LOAD_CACHE(${Complex_SOURCE_DIR}/Cache
            EXCLUDE
              CACHE_TEST_VAR_EXCLUDED
diff --git a/Tests/ComplexOneConfig/CMakeLists.txt b/Tests/ComplexOneConfig/CMakeLists.txt
index 568c8d433..7bed23ec0 100644
--- a/Tests/ComplexOneConfig/CMakeLists.txt
+++ b/Tests/ComplexOneConfig/CMakeLists.txt
@@ -24,7 +24,7 @@ SEPARATE_ARGUMENTS(TEST_SEP)
 IF (EXISTS ${Complex_SOURCE_DIR}/VarTests.cmake)
   INCLUDE(${Complex_SOURCE_DIR}/VarTests.cmake)
 ENDIF (EXISTS ${Complex_SOURCE_DIR}/VarTests.cmake)
-
+INCLUDE(fileshouldnotbehere OPTIONAL)
 LOAD_CACHE(${Complex_SOURCE_DIR}/Cache
            EXCLUDE
              CACHE_TEST_VAR_EXCLUDED
diff --git a/Tests/ComplexRelativePaths/CMakeLists.txt b/Tests/ComplexRelativePaths/CMakeLists.txt
index 568c8d433..7bed23ec0 100644
--- a/Tests/ComplexRelativePaths/CMakeLists.txt
+++ b/Tests/ComplexRelativePaths/CMakeLists.txt
@@ -24,7 +24,7 @@ SEPARATE_ARGUMENTS(TEST_SEP)
 IF (EXISTS ${Complex_SOURCE_DIR}/VarTests.cmake)
   INCLUDE(${Complex_SOURCE_DIR}/VarTests.cmake)
 ENDIF (EXISTS ${Complex_SOURCE_DIR}/VarTests.cmake)
-
+INCLUDE(fileshouldnotbehere OPTIONAL)
 LOAD_CACHE(${Complex_SOURCE_DIR}/Cache
            EXCLUDE
              CACHE_TEST_VAR_EXCLUDED