diff --git a/.builds/linux.yml b/.builds/linux.yml
index e0a5af23..e5502d4a 100644
--- a/.builds/linux.yml
+++ b/.builds/linux.yml
@@ -39,4 +39,4 @@ tasks:
      go test -race ./...
  - check_gofmt: |
      cd gio
-     test -z $(gofmt -s -l .)
+     test -z "$(gofmt -s -l .)"
diff --git a/cmd/gogio/wayland_test.go b/cmd/gogio/wayland_test.go
index 5294d07d..6e71821c 100644
--- a/cmd/gogio/wayland_test.go
+++ b/cmd/gogio/wayland_test.go
@@ -72,7 +72,7 @@ func (d *WaylandTestDriver) Start(t_ *testing.T, path string, width, height int)
 	cleanups = append(cleanups, func() { os.RemoveAll(dir) })
 
 	bin := filepath.Join(dir, "red")
-	flags := []string{"build", "-tags", "nox11", "-o="+bin}
+	flags := []string{"build", "-tags", "nox11", "-o=" + bin}
 	if raceEnabled {
 		flags = append(flags, "-race")
 	}
diff --git a/cmd/gogio/x11_test.go b/cmd/gogio/x11_test.go
index 88b965fd..008c496c 100644
--- a/cmd/gogio/x11_test.go
+++ b/cmd/gogio/x11_test.go
@@ -69,7 +69,7 @@ func (d *X11TestDriver) Start(t_ *testing.T, path string, width, height int) (cl
 	cleanups = append(cleanups, func() { os.RemoveAll(dir) })
 
 	bin := filepath.Join(dir, "red")
-	flags := []string{"build", "-tags", "nowayland", "-o="+bin}
+	flags := []string{"build", "-tags", "nowayland", "-o=" + bin}
 	if raceEnabled {
 		flags = append(flags, "-race")
 	}