diff --git a/doc/manual.rst b/doc/manual.rst
index df591701c441d..db72e199f0468 100644
--- a/doc/manual.rst
+++ b/doc/manual.rst
@@ -7081,7 +7081,7 @@ one can import C++'s templates rather easily without the need for a pattern
 language for object types:
 
 .. code-block:: nim
-  :test: "nim cpp $1"
+    :test: "nim cpp $1"
 
   type
     StdMap[K, V] {.importcpp: "std::map", header: "<map>".} = object