diff --git a/DRAMSys/library/src/common/AddressDecoder.cpp b/DRAMSys/library/src/common/AddressDecoder.cpp
index 63e2e921..266e9bca 100644
--- a/DRAMSys/library/src/common/AddressDecoder.cpp
+++ b/DRAMSys/library/src/common/AddressDecoder.cpp
@@ -56,6 +56,9 @@ void AddressDecoder::createInstance(Type t)
     case Type::JSON:
         m_pInstance = new JSONAddressDecoder;
         break;
+    default:
+        throw std::logic_error("Instance type not supported.");
+        break;
     }
 }