diff --git a/examples/language-modeling/run_clm.py b/examples/language-modeling/run_clm.py
index 4635703b9db0..e322cc2b1747 100755
--- a/examples/language-modeling/run_clm.py
+++ b/examples/language-modeling/run_clm.py
@@ -136,8 +136,8 @@ class DataTrainingArguments:
     block_size: Optional[int] = field(
         default=None,
         metadata={
-            "help": "Optional input sequence length after tokenization."
-            "The training dataset will be truncated in block of this size for training."
+            "help": "Optional input sequence length after tokenization. "
+            "The training dataset will be truncated in block of this size for training. "
             "Default to the model max input length for single sentence inputs (take into account special tokens)."
         },
     )