diff --git a/Tests/Complex/CMakeLists.txt b/Tests/Complex/CMakeLists.txt
index 881f11a27..54170d062 100644
--- a/Tests/Complex/CMakeLists.txt
+++ b/Tests/Complex/CMakeLists.txt
@@ -237,3 +237,4 @@ ENDIF(NOT STRING_REGEX_PASSED)
 SUBDIRS(Library Executable)
 SUBDIR_DEPENDS(Executable Library)
 EXPORT_LIBRARY_DEPENDENCIES(${Complex_BINARY_DIR}/ComplexLibraryDepends.cmake)
+INCLUDE(${Complex_BINARY_DIR}/ComplexLibraryDepends.cmake OPTIONAL)
diff --git a/Tests/ComplexOneConfig/CMakeLists.txt b/Tests/ComplexOneConfig/CMakeLists.txt
index 881f11a27..54170d062 100644
--- a/Tests/ComplexOneConfig/CMakeLists.txt
+++ b/Tests/ComplexOneConfig/CMakeLists.txt
@@ -237,3 +237,4 @@ ENDIF(NOT STRING_REGEX_PASSED)
 SUBDIRS(Library Executable)
 SUBDIR_DEPENDS(Executable Library)
 EXPORT_LIBRARY_DEPENDENCIES(${Complex_BINARY_DIR}/ComplexLibraryDepends.cmake)
+INCLUDE(${Complex_BINARY_DIR}/ComplexLibraryDepends.cmake OPTIONAL)
diff --git a/Tests/ComplexRelativePaths/CMakeLists.txt b/Tests/ComplexRelativePaths/CMakeLists.txt
index 881f11a27..54170d062 100644
--- a/Tests/ComplexRelativePaths/CMakeLists.txt
+++ b/Tests/ComplexRelativePaths/CMakeLists.txt
@@ -237,3 +237,4 @@ ENDIF(NOT STRING_REGEX_PASSED)
 SUBDIRS(Library Executable)
 SUBDIR_DEPENDS(Executable Library)
 EXPORT_LIBRARY_DEPENDENCIES(${Complex_BINARY_DIR}/ComplexLibraryDepends.cmake)
+INCLUDE(${Complex_BINARY_DIR}/ComplexLibraryDepends.cmake OPTIONAL)