diff --git a/paddle/framework/operator.h b/paddle/framework/operator.h
index 90e30bee0a1ae6d8e70b46981c39579df0a76028..64481706528c03abd1f474a7f766cd4725a5d10b 100644
--- a/paddle/framework/operator.h
+++ b/paddle/framework/operator.h
@@ -119,7 +119,7 @@ class OperatorBase {
  protected:
   std::string type_;
   // NOTE: in case of OpGrad, inputs_ contains:
-  // I (Inputs)opear
+  // I (Inputs)
   // O (Outputs)
   // OG (Output Gradients)
   VarNameMap inputs_;