diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3c6daf90b0..de60c1b8b5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -28,8 +28,8 @@ string(REPLACE "$(EFFECTIVE_PLATFORM_NAME)" "" PANDA_CFG_INTDIR "${CMAKE_CFG_INT
 
 # Add generic modules to cmake module path,
 # and add Panda3D specific modules to cmake module path
-set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/modules/")
-set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/macros/")
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules/")
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake/macros/")
 
 if(CMAKE_VERSION VERSION_GREATER "3.8")
   # When using the Xcode generator, don't append the platform name to the