diff --git a/doc/howto/dev/new_op_en.md b/doc/howto/dev/new_op_en.md
index 4a854c814217c79145e5deceba0206c9be2a978d..60681cdd718547e1abc730ea720f05bbd39561f1 100644
--- a/doc/howto/dev/new_op_en.md
+++ b/doc/howto/dev/new_op_en.md
@@ -353,4 +353,4 @@ ctest -R test_mul_op
 - Every `*_op.h` (if applicable), `*_op.cc`, and `*_op.cu` (if applicable) must be created for a unique Op. Compiling will fail if multiple operators are included per file.
 - The type with which an operator is registered needs to be identical to the Op's name. Registering `REGISTER_OP(B, ...)` in `A_op.cc` will cause unit testing failures.
 - If the operator does not implement a GPU kernel, please refrain from creating an empty `*_op.cu` file, or else unit tests will fail.
-- If multiple operators rely on some shared methods, a file NOT named `*_op.*` can be created to store them, such as `gather.h`.
\ No newline at end of file
+- If multiple operators rely on some shared methods, a file NOT named `*_op.*` can be created to store them, such as `gather.h`.