diff --git a/src/yaml/parsers.cc b/src/yaml/parsers.cc
index f57f2f8..2661447 100644
--- a/src/yaml/parsers.cc
+++ b/src/yaml/parsers.cc
@@ -77,6 +77,6 @@ template<>
 const char* ScalarParserTraits<int>::fmt = "%d";
 
 template<>
-const char* ScalarParserTraits<double>::fmt = "%ld";
+const char* ScalarParserTraits<double>::fmt = "%lf";
 
 } /* namespace yaml */