1 files changed, 1 insertions, 1 deletions
diff --git a/src/script/standard.cpp b/src/script/standard.cpp
index 9570b8c8d9..0f720d9e76 100644
--- a/src/script/standard.cpp
+++ b/src/script/standard.cpp
@@ -253,7 +253,7 @@ class CScriptVisitor : public boost::static_visitor<bool>
 private:
     CScript *script;
 public:
-    CScriptVisitor(CScript *scriptin) { script = scriptin; }
+    explicit CScriptVisitor(CScript *scriptin) { script = scriptin; }
 
     bool operator()(const CNoDestination &dest) const {
         script->clear();