diff --git a/cmd/minify/README.md b/cmd/minify/README.md
index 2a5247aa9b..b14f6a16bf 100644
--- a/cmd/minify/README.md
+++ b/cmd/minify/README.md
@@ -172,6 +172,8 @@ Minify only javascript files in **src/**:
 $ minify -r -o out/ --match="\.js$" src
 ```
 
+A trailing slash in the source path will copy all files inside the directory, while omitting the trainling slash will copy the directory as well.
+
 ### Concatenate
 When multiple inputs are given and the output is either standard output or a single file, it will concatenate the files together if you use the bundle option.
 
diff --git a/cmd/minify/main.go b/cmd/minify/main.go
index a7a9866b7c..cec53aafa1 100644
--- a/cmd/minify/main.go
+++ b/cmd/minify/main.go
@@ -346,6 +346,9 @@ func run() int {
 
 	for i, input := range inputs {
 		inputs[i] = filepath.Clean(input)
+		if input[len(input)-1] == '/' {
+			inputs[i] += "/"
+		}
 	}
 
 	// set output file or directory, empty means stdout