diff --git a/langkit/templates/astnode_types_ada.mako b/langkit/templates/astnode_types_ada.mako
index 7346943a8..c29f2c2ed 100644
--- a/langkit/templates/astnode_types_ada.mako
+++ b/langkit/templates/astnode_types_ada.mako
@@ -382,7 +382,7 @@
          ## Look for a child node that contains Sloc (i.e. return the most
          ## precise result).
 
-         % for i, field in enumerate(astnode_fields):
+         % for field in astnode_fields:
             ## Note that we assume here that child nodes are ordered so
             ## that the first one has a sloc range that is before the
             ## sloc range of the second child node, etc.