diff --git a/include/mapnik/transform_expression_grammar_x3_def.hpp b/include/mapnik/transform_expression_grammar_x3_def.hpp
index 88e055fe6..64a744f97 100644
--- a/include/mapnik/transform_expression_grammar_x3_def.hpp
+++ b/include/mapnik/transform_expression_grammar_x3_def.hpp
@@ -102,7 +102,7 @@ namespace mapnik { namespace grammar {
     // start
     auto const transform_def = transform_list_rule;
 
-    auto const transform_list_rule_def = transform_node_rule % no_skip[char_(", ")];
+    auto const transform_list_rule_def = transform_node_rule % no_skip[*char_(", ")];
 
     auto const transform_node_rule_def = matrix | translate  | scale | rotate | skewX | skewY ;