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-rw-r--r--src/lib/IWORKFormula.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/lib/IWORKFormula.h b/src/lib/IWORKFormula.h
index 49045c4..d004323 100644
--- a/src/lib/IWORKFormula.h
+++ b/src/lib/IWORKFormula.h
@@ -30,7 +30,7 @@ class IWORKFormula
public:
struct Token;
- IWORKFormula(const boost::optional<unsigned> &hc);
+ explicit IWORKFormula(const boost::optional<unsigned> &hc);
bool parse(const std::string &formula);
bool parse(const std::vector<Token> &formula);