diff --git a/lib/cpp/src/protocol/TJSONProtocol.cpp b/lib/cpp/src/protocol/TJSONProtocol.cpp
index 39eb129..d2d56c1 100644
--- a/lib/cpp/src/protocol/TJSONProtocol.cpp
+++ b/lib/cpp/src/protocol/TJSONProtocol.cpp
@@ -81,7 +81,7 @@
 
 static TType getTypeIDForTypeName(const std::string &name) {
   TType result = T_STOP; // Sentinel value
-  if (name.length() > 0) {
+  if (name.length() > 1) {
     switch (name[0]) {
     case 'd':
       result = T_DOUBLE;