diff --git a/ci/code_cleanup.sh b/ci/code_cleanup.sh
index 9a4e47b5..2568087c 100755
--- a/ci/code_cleanup.sh
+++ b/ci/code_cleanup.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 ref="$1"
-changed_files="$(git diff --relative --name-only $ref... | egrep '\.cs$')"
+changed_files="$(git diff --relative --name-only --diff-filter=d $ref... | egrep '\.cs$')"
 
 if [[ -z "$changed_files" ]]; then
   echo "No changed files detected; skipping code cleanup"