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-rw-r--r--src/mbgl/layout/symbol_layout.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mbgl/layout/symbol_layout.cpp b/src/mbgl/layout/symbol_layout.cpp
index e95fb56c1d..d6d7eb8c13 100644
--- a/src/mbgl/layout/symbol_layout.cpp
+++ b/src/mbgl/layout/symbol_layout.cpp
@@ -33,7 +33,7 @@ expression::Value sectionOptionsToValue(const SectionOptions& options) {
return (*options.id).match(
[] (double t) -> expression::Value { return t; },
[] (const std::string& t) -> expression::Value { return t; },
- [] (auto&) -> expression::Value { return {}; });
+ [] (const auto&) -> expression::Value { return {}; });
}
return {};
}