diff --git a/libraries/octree/CMakeLists.txt b/libraries/octree/CMakeLists.txt
index f4ac2263c2..c55f3bae89 100644
--- a/libraries/octree/CMakeLists.txt
+++ b/libraries/octree/CMakeLists.txt
@@ -3,7 +3,8 @@ set(TARGET_NAME octree)
 # use setup_hifi_library macro to setup our project and link appropriate Qt modules
 setup_hifi_library()
 
-include_glm()
+add_dependency_external_project(glm)
+target_include_directories(${TARGET_NAME} PUBLIC ${GLM_INCLUDE_DIRS})
 
 link_hifi_libraries(shared networking)