diff --git a/FlippR-Driver/src/PinController.cpp b/FlippR-Driver/src/PinController.cpp
index f122399..7bff902 100644
--- a/FlippR-Driver/src/PinController.cpp
+++ b/FlippR-Driver/src/PinController.cpp
@@ -50,13 +50,15 @@ bool PinController::read_pin(uint8_t address)
 
 void PinController::initialize_port_expander(const uint8_t i2c_address, const uint8_t pin_base)
 {
-  auto initialized_port_extender = this->initialized_port_extenders.insert(std::pair<uint8_t, uint8_t>(i2c_address, pin_base);
-  if(initialized_port_extender->second)
+  auto initialized_port_extender = this->initialized_port_extenders.insert(std::pair<uint8_t, uint8_t>(i2c_address, pin_base));
+  if(not initialized_port_extender.second)
   {
-    if(initialized_port_extender->first->second != pin_base)
+    if(initialized_port_extender.first->second != pin_base)
     {
-      CLOG(ERROR, OUTPUT_LOGGER) << "Port extender with address " << i2c_address
-                                 << " is already initialized with pin base " << pin_base;
+      char hex_string[4];
+      sprintf(hex_string, "%X", i2c_address);
+      CLOG(WARNING, OUTPUT_LOGGER) << "Port extender with address 0x" << hex_string
+                                 << " is already initialized with pin base " << int(pin_base) << ". Check config files!";
     }
     return;
   }