diff --git a/v2.1/docs/operators/Addition/content.rst b/v2.1/docs/operators/Addition/content.rst
index f21432a..e3b70c7 100644
--- a/v2.1/docs/operators/Addition/content.rst
+++ b/v2.1/docs/operators/Addition/content.rst
@@ -21,7 +21,7 @@ Semantics  for scalar operations
 The operator addition returns the sum of two numbers.
 For example: ::
 
-3 + 5   gives 8
+	3 + 5   gives 8
 
 -----------------------------
 Input parameters type