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-rw-r--r--src/strings/literal.hpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/strings/literal.hpp b/src/strings/literal.hpp
index c5b9938..54192da 100644
--- a/src/strings/literal.hpp
+++ b/src/strings/literal.hpp
@@ -54,7 +54,7 @@ namespace strings
FormatString(const char *f) : _format(f) {}
public:
constexpr
- const char *format_string() { return _format; }
+ const char *format_string() const { return _format; }
};