diff --git a/cpp/cmake/thirdparty/CUDF_GetDLPack.cmake b/cpp/cmake/thirdparty/CUDF_GetDLPack.cmake
index 5aaf5eaa434..b41c6d3b8d2 100644
--- a/cpp/cmake/thirdparty/CUDF_GetDLPack.cmake
+++ b/cpp/cmake/thirdparty/CUDF_GetDLPack.cmake
@@ -16,7 +16,7 @@
 
 function(find_and_configure_dlpack VERSION)
     if(DLPACK_INCLUDE)
-        set(DLPACK_INCLUDE_DIR "${DLPACK_INCLUDE_DIR}" PARENT_SCOPE)
+        set(DLPACK_INCLUDE_DIR "${DLPACK_INCLUDE}" PARENT_SCOPE)
         return()
     endif()
     find_path(DLPACK_INCLUDE_DIR "dlpack"