diff --git a/src/path/example_test.go b/src/path/example_test.go
index fa8c28d2e1..e8d684f771 100644
--- a/src/path/example_test.go
+++ b/src/path/example_test.go
@@ -54,7 +54,14 @@ func ExampleIsAbs() {
 
 func ExampleJoin() {
 	fmt.Println(path.Join("a", "b", "c"))
-	// Output: a/b/c
+	fmt.Println(path.Join("a", "b/c"))
+	fmt.Println(path.Join("a/b", "c"))
+	fmt.Println(path.Join("a/b", "/c"))
+	// Output:
+	// a/b/c
+	// a/b/c
+	// a/b/c
+	// a/b/c
 }
 
 func ExampleSplit() {
diff --git a/src/path/filepath/example_unix_test.go b/src/path/filepath/example_unix_test.go
index 893be1b198..cd8233ceb6 100644
--- a/src/path/filepath/example_unix_test.go
+++ b/src/path/filepath/example_unix_test.go
@@ -65,3 +65,17 @@ func ExampleSplit() {
 	// 	dir: "/usr/local//"
 	// 	file: "go"
 }
+
+func ExampleJoin() {
+	fmt.Println("On Unix:")
+	fmt.Println(filepath.Join("a", "b", "c"))
+	fmt.Println(filepath.Join("a", "b/c"))
+	fmt.Println(filepath.Join("a/b", "c"))
+	fmt.Println(filepath.Join("a/b", "/c"))
+	// Output:
+	// On Unix:
+	// a/b/c
+	// a/b/c
+	// a/b/c
+	// a/b/c
+}