diff --git a/lib/json.cpp b/lib/json.cpp
index 2b78934b..928c410b 100644
--- a/lib/json.cpp
+++ b/lib/json.cpp
@@ -674,9 +674,9 @@ std::string JSON::Value::toPrettyString(int indentation) const{
       break;
     }
     case STRING: {
-      for (unsigned int i = 0; i < 5 && i < strVal.size(); ++i){
-        if (strVal[i] < 32 || strVal[i] > 125){
-          return JSON::Value((long long int)strVal.size()).asString() + " bytes of binary data";
+      for (unsigned int i = 0; i < 201 && i < strVal.size(); ++i){
+        if (strVal[i] < 32 || strVal[i] > 126 || strVal.size() > 200){
+          return "\""+JSON::Value((long long int)strVal.size()).asString() + " bytes of data\"";
         }
       }
       return string_escape(strVal);