diff --git a/cli/lib/exec/spawn.js b/cli/lib/exec/spawn.js
index 952fd2f96b73..66fd9b97c4f4 100644
--- a/cli/lib/exec/spawn.js
+++ b/cli/lib/exec/spawn.js
@@ -109,7 +109,7 @@ const GARBAGE_WARNINGS = [
   isEGLDriverMessage,
   isXdgRuntimeError,
   isMesaZinkError,
-  isGlxDriverError
+  isGlxDriverError,
 ]
 
 const isGarbageLineWarning = (str) => {
diff --git a/cli/test/lib/exec/spawn_spec.js b/cli/test/lib/exec/spawn_spec.js
index 8b66d4a7579d..17f552cc90cc 100644
--- a/cli/test/lib/exec/spawn_spec.js
+++ b/cli/test/lib/exec/spawn_spec.js
@@ -114,18 +114,15 @@ describe('lib/exec/spawn', function () {
     })
 
     it('returns true for XDG runtime dir warnings', () => {
-      const str = 'error: XDG_RUNTIME_DIR is invalid or not set'
-      expect(spawn.isGarbageLineWarning(str)).to.be.true
+      expect(spawn.isGarbageLineWarning('error: XDG_RUNTIME_DIR is invalid or not set')).to.be.true
     })
 
     it('returns true for MESA ZINK errors', () => {
-      const str = 'MESA: error: ZINK: failed to choose pdev'
-      expect(spawn.isGarbageLineWarning(str)).to.be.true
+      expect(spawn.isGarbageLineWarning('MESA: error: ZINK: failed to choose pdev')).to.be.true
     })
 
     it('returns true for GLX driver errors', () => {
-      const str = 'glx: failed to create drisw screen'
-      expect(spawn.isGarbageLineWarning(str)).to.be.true
+      expect(spawn.isGarbageLineWarning('glx: failed to create drisw screen')).to.be.true
     })
   })