diff --git a/src/zcl_excel_comment.clas.abap b/src/zcl_excel_comment.clas.abap
index 8844b96..acb43d5 100644
--- a/src/zcl_excel_comment.clas.abap
+++ b/src/zcl_excel_comment.clas.abap
@@ -41,7 +41,7 @@ CLASS zcl_excel_comment DEFINITION
     DATA ref TYPE string .
     DATA text TYPE string .
     DATA width TYPE i .
-    DATA height TYPE I .
+    DATA height TYPE i .
 ENDCLASS.