diff --git a/misc/cgo/testcshared/cshared_test.go b/misc/cgo/testcshared/cshared_test.go
index 142ccf083d..b81ec3b4c1 100644
--- a/misc/cgo/testcshared/cshared_test.go
+++ b/misc/cgo/testcshared/cshared_test.go
@@ -42,15 +42,15 @@ func TestMain(m *testing.M) {
 
 	// Directory where cgo headers and outputs will be installed.
 	// The installation directory format varies depending on the platform.
-	installdir = path.Join("pkg", fmt.Sprintf("%s_%s_testcshared_shared", GOOS, GOARCH))
+	installdir = path.Join("pkg", fmt.Sprintf("%s_%s_testcshared", GOOS, GOARCH))
 	switch GOOS {
 	case "darwin":
 		libSuffix = "dylib"
-		installdir = path.Join("pkg", fmt.Sprintf("%s_%s_testcshared", GOOS, GOARCH))
 	case "windows":
 		libSuffix = "dll"
 	default:
 		libSuffix = "so"
+		installdir = path.Join("pkg", fmt.Sprintf("%s_%s_testcshared_shared", GOOS, GOARCH))
 	}
 
 	androiddir = fmt.Sprintf("/data/local/tmp/testcshared-%d", os.Getpid())