diff --git a/lib/obus_can.cpp b/lib/obus_can.cpp
index daacb36..c923b93 100644
--- a/lib/obus_can.cpp
+++ b/lib/obus_can.cpp
@@ -74,6 +74,7 @@ void init() {
 	mcp2515.reset();
 	mcp2515.setBitrate(CAN_50KBPS);
 	mcp2515.setNormalMode();
+	mcp2515.setRegister(MCP_CANINTE, CANINTF_ERRIF);
 }
 
 
diff --git a/lib/obus_module.cpp b/lib/obus_module.cpp
index 8903f5b..acb13f1 100644
--- a/lib/obus_module.cpp
+++ b/lib/obus_module.cpp
@@ -32,6 +32,7 @@ void setup(uint8_t type, uint8_t id) {
 	pinMode(GREEN_LED, OUTPUT);
 	digitalWrite(RED_LED, LOW);
 	digitalWrite(GREEN_LED, LOW);
+	attachInterrupt(digitalPinToInterrupt(MCP_INT), interrupt_can_error, RISING);
 }
 
 bool loop(obus_can::message* message) {