diff --git a/include/common.h b/include/common.h
index 6a61cff..27f5844 100644
--- a/include/common.h
+++ b/include/common.h
@@ -19,6 +19,19 @@ EXPORT std::ostream& COUT(debug_level dl);
 
 typedef std::set<std::string> UsedType;
 
+// We use different format for conversion of double to string
+template<class T>
+inline std::string ToString(T n) { return std::to_string(n); }
+template<>
+inline std::string ToString<double>(double n)
+{
+ char buffer[32];
+ int i;
+ i=snprintf(buffer,32,"%.*G",DBL_DIG,n);
+ return std::string(buffer,i);
+}
+template<>
+inline std::string ToString<std::string>(std::string s) {return s;}
 
 // Base class for all objects
 class EXPORT ObjectBase
@@ -159,7 +172,7 @@ public:
  bool Print() const override
  {
   COUT(NORMAL)<<std::endl<<"Object type: "<<Type()<<std::endl;
-  COUT(NORMAL)<<"Value: "<<val<<std::endl;
+  COUT(NORMAL)<<"Value: "<<ToString(val)<<std::endl;
   return true;
  }
  std::string Type() const override {return type;}
@@ -171,7 +184,7 @@ public:
   if(std::type_index(typeid(T))==std::type_index(typeid(std::string)))
    s<<"\""<<val<<"\"";
   else
-   s<<val;
+   s<<ToString(val);
   return s.str();
  }
 
@@ -414,16 +427,4 @@ inline WordList Split(const char* str, const std::string& delims) {return Split(
 inline WordList Split(const std::string& str, const char* delims) {return Split(str,std::string(delims),false);}
 inline WordList Split(const char* str, const char* delims) {return Split(std::string(str),std::string(delims),false);}
 
-// We use different format for conversion of double to string
-template<class T>
-inline std::string ToString(T n) { return std::to_string(n); }
-
-template<>
-inline std::string ToString<double>(double n)
-{
- char buffer[32];
- int i;
- i=snprintf(buffer,32,"%.*G",DBL_DIG,n);
- return std::string(buffer,i);
-}
 #endif