diff --git a/calc.go b/calc.go
index bde0b47..5fdd6da 100644
--- a/calc.go
+++ b/calc.go
@@ -518,7 +518,9 @@ func sortcommands(hash Commands) []string {
 	keys := make([]string, 0, len(hash))
 
 	for key := range hash {
-		keys = append(keys, key)
+		if len(key) > 1 {
+			keys = append(keys, key)
+		}
 	}
 
 	sort.Strings(keys)
diff --git a/main.go b/main.go
index 3785060..9855a36 100644
--- a/main.go
+++ b/main.go
@@ -30,7 +30,7 @@ import (
 	lua "github.com/yuin/gopher-lua"
 )
 
-const VERSION string = "2.0.11"
+const VERSION string = "2.0.12"
 
 const Usage string = `This is rpn, a reverse polish notation calculator cli.