diff --git a/libcuframes/CMakeLists.txt b/libcuframes/CMakeLists.txt
index cda8fd6..20bebdc 100644
--- a/libcuframes/CMakeLists.txt
+++ b/libcuframes/CMakeLists.txt
@@ -19,7 +19,7 @@ add_library(cuframes_static STATIC ${CUFRAMES_SOURCES})
 foreach(target cuframes cuframes_static)
     target_include_directories(${target}
         PUBLIC
-            $<BUILD_INTERFACE:${CMAKE_SOURCE_DIR}/include>
+            $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
             $<INSTALL_INTERFACE:include>
         PRIVATE
             ${CMAKE_CURRENT_SOURCE_DIR}/src