diff --git a/check-diff.sh b/check-diff.sh
index a16a6cb..8542760 100755
--- a/check-diff.sh
+++ b/check-diff.sh
@@ -69,10 +69,14 @@ function set_environment_variables {
 			DIFF_BASE=${DIFF_BASE:-$TRAVIS_COMMIT^}
 		fi
 		DIFF_HEAD=${DIFF_HEAD:-$TRAVIS_COMMIT}
+	elif [[ ! -z "${BITBUCKET_BRANCH}" ]]; then
+		DIFF_BASE=${DIFF_BASE:-$BITBUCKET_COMMIT^}
+		DIFF_HEAD=${DIFF_HEAD:-$BITBUCKET_COMMIT}
 	else
 		DIFF_BASE=${DIFF_BASE:-HEAD}
 		DIFF_HEAD=${DIFF_HEAD:-WORKING}
 	fi
+
 	while [[ $# > 0 ]]; do
 		key="$1"
 		case "$key" in