diff --git a/src/lib_json/json_value.cpp b/src/lib_json/json_value.cpp
index b046c1939..f7c53d9f5 100644
--- a/src/lib_json/json_value.cpp
+++ b/src/lib_json/json_value.cpp
@@ -847,9 +847,11 @@ bool Value::asBool() const {
     return value_.int_ ? true : false;
   case uintValue:
     return value_.uint_ ? true : false;
-  case realValue:
-    // This is kind of strange. Not recommended.
-    return (value_.real_ != 0.0) ? true : false;
+  case realValue: {
+      // According to JavaScript language zero or NaN is regarded as false
+      const auto value_classification = std::fpclassify(value_.real_);
+      return value_classification != FP_ZERO && value_classification != FP_NAN;
+  }
   default:
     break;
   }