diff --git a/README.md b/README.md
index c775746e..072edfe9 100644
--- a/README.md
+++ b/README.md
@@ -372,7 +372,7 @@ Copy file and making it executable is also supported:
 ```yaml
 - name: copy file and make it executable
   copy:
-    - {"src": "testdata/script.sh", "dst": "/tmp/script.sh", "chmod_x": true}
+    - {"src": "testdata/script.sh", "dst": "/tmp/script.sh", "chmod+x": true}
 ```
 
 
diff --git a/pkg/config/command.go b/pkg/config/command.go
index f1f249bb..d8f48ece 100644
--- a/pkg/config/command.go
+++ b/pkg/config/command.go
@@ -52,7 +52,7 @@ type CopyInternal struct {
 	Mkdir   bool     `yaml:"mkdir" toml:"mkdir"`     // create destination directory if it does not exist
 	Force   bool     `yaml:"force" toml:"force"`     // force copy even if source and destination are the same
 	Exclude []string `yaml:"exclude" toml:"exclude"` // exclude files matching these patterns
-	ChmodX  bool     `yaml:"chmod_x" toml:"chmod_x"` // chmod +x on destination file
+	ChmodX  bool     `yaml:"chmod+x" toml:"chmod+x"` // chmod +x on destination file
 }
 
 // SyncInternal defines sync command (recursive copy), implemented internally