diff --git a/examples/dft/run_time_dispatching/CMakeLists.txt b/examples/dft/run_time_dispatching/CMakeLists.txt
index 999a771c1..6d9a8dd24 100644
--- a/examples/dft/run_time_dispatching/CMakeLists.txt
+++ b/examples/dft/run_time_dispatching/CMakeLists.txt
@@ -35,7 +35,7 @@ if(ENABLE_MKLGPU_BACKEND)
   list(APPEND DEVICE_FILTERS "level_zero:gpu")
 endif()
 if(ENABLE_PORTFFT_BACKEND)
-  list(APPEND_DEVICE_FILTERS "*:gpu")
+  list(APPEND DEVICE_FILTERS "*:gpu")
 endif()
 if(ENABLE_CUFFT_BACKEND)
   list(APPEND DEVICE_FILTERS "cuda:gpu")