diff --git a/apps/debugger/src/app/debugger-api.ts b/apps/debugger/src/app/debugger-api.ts
index 0f9293b8e8..f7ab74696a 100644
--- a/apps/debugger/src/app/debugger-api.ts
+++ b/apps/debugger/src/app/debugger-api.ts
@@ -50,7 +50,7 @@ export const DebuggerApiMixin = (Base) => class extends Base {
 
   async highlight (lineColumnPos, path, rawLocation, stepDetail) {
     await this.call('editor', 'highlight', lineColumnPos, path, '', { focus: true })
-    const label = `${stepDetail.op} - ${stepDetail.gasCost} gas - ${stepDetail.gas} gas left`
+    const label = `${stepDetail.op} costs ${stepDetail.gasCost} gas - ${stepDetail.gas} gas left`
     const linetext: lineText = {
         content: label,
         position: lineColumnPos,