1 files changed, 1 insertions, 1 deletions
diff --git a/devtools/client/debugger/src/actions/tests/helpers/mockCommandClient.js b/devtools/client/debugger/src/actions/tests/helpers/mockCommandClient.js
index 38dd55c274..2e0333fc99 100644
--- a/devtools/client/debugger/src/actions/tests/helpers/mockCommandClient.js
+++ b/devtools/client/debugger/src/actions/tests/helpers/mockCommandClient.js
@@ -29,7 +29,7 @@ const sources = [
 ];
 
 export const mockCommandClient = {
-  sourceContents: function ({ source }) {
+  sourceContents({ source }) {
     return new Promise((resolve, reject) => {
       if (sources.includes(source)) {
         resolve(createSource(source));