diff --git a/visualdl/backend/logic/sdk.h b/visualdl/backend/logic/sdk.h
index 8392d5966c22ba42bb1a9b7f1dfb0e210aa87d45..54a504325a1905f3a58c4e9a96817c64775275ec 100644
--- a/visualdl/backend/logic/sdk.h
+++ b/visualdl/backend/logic/sdk.h
@@ -114,7 +114,7 @@ public:
 namespace components {
 
 /*
- * Read and write support for a Scalar component.
+ * Read and write support for Scalar component.
  */
 template <typename T>
 class ScalarHelper {