diff --git a/v2/internal/frontend/desktop/darwin/frontend.go b/v2/internal/frontend/desktop/darwin/frontend.go
index b497489d5..d9b0222b2 100644
--- a/v2/internal/frontend/desktop/darwin/frontend.go
+++ b/v2/internal/frontend/desktop/darwin/frontend.go
@@ -326,7 +326,7 @@ func (f *Frontend) processRequest(r *request) {
 					req.Body.Close()
 				}
 
-				return nil, fmt.Errorf("Expected host '%d' in request, but was '%s'", f.startURL.Host, req.URL.Host)
+				return nil, fmt.Errorf("Expected host '%s' in request, but was '%s'", f.startURL.Host, req.URL.Host)
 			}
 			return req, nil
 		},
diff --git a/v2/internal/frontend/desktop/linux/frontend.go b/v2/internal/frontend/desktop/linux/frontend.go
index a863fef88..3d558d660 100644
--- a/v2/internal/frontend/desktop/linux/frontend.go
+++ b/v2/internal/frontend/desktop/linux/frontend.go
@@ -355,7 +355,7 @@ func (f *Frontend) processRequest(request unsafe.Pointer) {
 					req.Body.Close()
 				}
 
-				return nil, fmt.Errorf("Expected host '%d' in request, but was '%s'", f.startURL.Host, req.URL.Host)
+				return nil, fmt.Errorf("Expected host '%s' in request, but was '%s'", f.startURL.Host, req.URL.Host)
 			}
 
 			return req, nil