diff --git a/diff-sha.sh b/diff-sha.sh
index e11d3e3f..47fc3a84 100644
--- a/diff-sha.sh
+++ b/diff-sha.sh
@@ -200,12 +200,12 @@ else
     fi
   else
     if [[ -z $INPUT_SHA ]]; then
-      CURRENT_SHA=$(git rev-list --no-merges -n 1 HEAD 2>&1) && exit_status=$? || exit_status=$?
+      CURRENT_SHA=$(git rev-list -n 1 HEAD 2>&1) && exit_status=$? || exit_status=$?
     else
       CURRENT_SHA=$INPUT_SHA; exit_status=$?
 
       if [[ "$CURRENT_SHA" == "$GITHUB_EVENT_PULL_REQUEST_HEAD_SHA" ]]; then
-        CURRENT_SHA=$(git rev-list --no-merges -n 1 HEAD 2>&1) && exit_status=$? || exit_status=$?
+        CURRENT_SHA=$(git rev-list -n 1 HEAD 2>&1) && exit_status=$? || exit_status=$?
       fi
     fi
   fi