diff --git a/cpp/cmake/Modules/JitifyPreprocessKernels.cmake b/cpp/cmake/Modules/JitifyPreprocessKernels.cmake
index 22de1c75162..6ab1293ab6f 100644
--- a/cpp/cmake/Modules/JitifyPreprocessKernels.cmake
+++ b/cpp/cmake/Modules/JitifyPreprocessKernels.cmake
@@ -51,8 +51,9 @@ function(jit_preprocess_files)
 endfunction()
 
 jit_preprocess_files(
-  SOURCE_DIRECTORY ${CUDF_SOURCE_DIR}/src FILES binaryop/jit/kernel.cu
-  transform/jit/kernel.cu rolling/jit/kernel.cu)
+  SOURCE_DIRECTORY ${CUDF_SOURCE_DIR}/src FILES binaryop/jit/kernel.cu transform/jit/kernel.cu
+  rolling/jit/kernel.cu
+)
 
 add_custom_target(
   jitify_preprocess_run