diff --git a/src/builtins/help.rs b/src/builtins/help.rs
index 9765d61..afd6321 100644
--- a/src/builtins/help.rs
+++ b/src/builtins/help.rs
@@ -53,4 +53,9 @@ mod tests {
 
     #[test]
     fn test_split_command_empty(){assert_eq!(split_command(""),vec!["",""])}
+
+    #[test]
+    fn test_split_command_only_space(){
+        assert_eq!(split_command("               "),vec!["",""]);
+    }
 }
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