diff --git a/firmware/controllers/lua/can_filter.cpp b/firmware/controllers/lua/can_filter.cpp
index 0a042bbd52..e4880ae9a8 100644
--- a/firmware/controllers/lua/can_filter.cpp
+++ b/firmware/controllers/lua/can_filter.cpp
@@ -27,8 +27,8 @@ void resetLuaCanRx() {
 }
 
 void addLuaCanRxFilter(int32_t eid, uint32_t mask, int bus, int callback) {
-    if (bus != ANY_BUS) {
-        assertHwCanBusIndex(bus);
+    if (bus != ANY_BUS && !isValidHwCanBusIndex(bus)) {
+		efiPrintf("LUA CAN bus index %d is not valid", bus);
     }
 
 	if (filterCount >= maxFilterCount) {
diff --git a/firmware/hw_layer/drivers/can/can_hw.cpp b/firmware/hw_layer/drivers/can/can_hw.cpp
index 7c3cd37bcb..4b46399c9a 100644
--- a/firmware/hw_layer/drivers/can/can_hw.cpp
+++ b/firmware/hw_layer/drivers/can/can_hw.cpp
@@ -335,9 +335,7 @@ bool getIsCanEnabled(void) {
 
 #endif /* EFI_CAN_SUPPORT */
 
-void assertHwCanBusIndex(const size_t busIndex) {
+bool isValidHwCanBusIndex(const size_t busIndex) {
     // 'size_t' is an unsigned type so we are never below zero here
-	if (busIndex > 1) {
-  		firmwareError(CUSTOM_OBD_70, "Invalid HW CAN bus index %d", busIndex);
-  	}
+	return (busIndex <= 1);
 }
diff --git a/firmware/hw_layer/drivers/can/can_hw.h b/firmware/hw_layer/drivers/can/can_hw.h
index 6b3b5c33e4..14f8792959 100644
--- a/firmware/hw_layer/drivers/can/can_hw.h
+++ b/firmware/hw_layer/drivers/can/can_hw.h
@@ -26,4 +26,4 @@ void postCanState();
 
 #endif /* EFI_CAN_SUPPORT */
 
-void assertHwCanBusIndex(const size_t busIndex);
+bool isValidHwCanBusIndex(const size_t busIndex);