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-rw-r--r--src/language_tag.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/language_tag.h b/src/language_tag.h
index a419914c..a0beaad0 100644
--- a/src/language_tag.h
+++ b/src/language_tag.h
@@ -171,7 +171,7 @@ public:
};
LanguageTag () {}
- LanguageTag (std::string tag);
+ explicit LanguageTag (std::string tag);
boost::optional<LanguageSubtag> language() const {
return _language;