diff --git a/.github/scripts/GUARD_COMMITS.sh b/.github/scripts/GUARD_COMMITS.sh
index 0d315de..e2e26d8 100755
--- a/.github/scripts/GUARD_COMMITS.sh
+++ b/.github/scripts/GUARD_COMMITS.sh
@@ -2,17 +2,23 @@
 
 TARGET_FILES=("swift-cinema/Sources/CinemaUI/MovieList.swift" "swift-cinema/Sources/CinemaUI/MovieRow.swift" "swift-cinema/Sources/CinemaUI/SubmissionDetailView.swift" "swift-cinema/Sources/Fetcher/Responses.swift" "swift-cinema/Tests/FetcherTests/MovieCollectionFetcherTests.swift" ".github/workflows/REVIEW_CODE.yml")
 
-COMMIT_COUNT=$(git rev-list --count HEAD)
+FIRST_COMMIT=$(git rev-list --max-parents=0 HEAD)
 
-if [ $COMMIT_COUNT -gt 1 ]; then
-  CHANGED_FILES=$(git diff --name-only -W main HEAD)
+CHANGED_FILES=$(git diff --name-only -W $FIRST_COMMIT HEAD)
 
-  for TARGET_FILE in "${TARGET_FILES[@]}"; do
-    if [[ $CHANGED_FILES == *"$TARGET_FILE"* ]]; then
+MODIFIED_TARGET_FILES=()
+for TARGET_FILE in "${TARGET_FILES[@]}"; do
+  if [[ $CHANGED_FILES == *"$TARGET_FILE"* ]]; then
+    MODIFIED_TARGET_FILES+=("$TARGET_FILE")
+  fi
+done
+
+if [ ${#MODIFIED_TARGET_FILES[@]} -gt 0 ]; then
       echo "에러! 수정하면 안되는 파일에 수정이 발생했습니다. 파일경로: $TARGET_FILE"
-      exit 1
-    fi
+  for MODIFIED_FILE in "${MODIFIED_TARGET_FILES[@]}"; do
+    echo "- $MODIFIED_FILE"
   done
+  exit 1
 fi
 
 echo "테스트가 가능합니다."