diff --git a/Software/src/inverter/PYLON-CAN.h b/Software/src/inverter/PYLON-CAN.h
index 711289c9..031a954b 100644
--- a/Software/src/inverter/PYLON-CAN.h
+++ b/Software/src/inverter/PYLON-CAN.h
@@ -6,5 +6,6 @@
 
 void send_system_data();
 void send_setup_info();
+void transmit_can(CAN_frame_t* tx_frame, int interface);
 
 #endif
diff --git a/Software/src/inverter/SMA-CAN.h b/Software/src/inverter/SMA-CAN.h
index 26e89884..49403b17 100644
--- a/Software/src/inverter/SMA-CAN.h
+++ b/Software/src/inverter/SMA-CAN.h
@@ -7,4 +7,6 @@
 #define READY_STATE 0x03
 #define STOP_STATE 0x02
 
+void transmit_can(CAN_frame_t* tx_frame, int interface);
+
 #endif
diff --git a/Software/src/inverter/SMA-TRIPOWER-CAN.h b/Software/src/inverter/SMA-TRIPOWER-CAN.h
index 61964b2a..11983811 100644
--- a/Software/src/inverter/SMA-TRIPOWER-CAN.h
+++ b/Software/src/inverter/SMA-TRIPOWER-CAN.h
@@ -5,5 +5,6 @@
 #define CAN_INVERTER_SELECTED
 
 void send_tripower_init();
+void transmit_can(CAN_frame_t* tx_frame, int interface);
 
 #endif
diff --git a/Software/src/inverter/SOFAR-CAN.h b/Software/src/inverter/SOFAR-CAN.h
index 9584c5b9..e4e1f4be 100644
--- a/Software/src/inverter/SOFAR-CAN.h
+++ b/Software/src/inverter/SOFAR-CAN.h
@@ -4,4 +4,6 @@
 
 #define CAN_INVERTER_SELECTED
 
+void transmit_can(CAN_frame_t* tx_frame, int interface);
+
 #endif
diff --git a/Software/src/inverter/SOLAX-CAN.h b/Software/src/inverter/SOLAX-CAN.h
index 2b04b69c..7ff9987c 100644
--- a/Software/src/inverter/SOLAX-CAN.h
+++ b/Software/src/inverter/SOLAX-CAN.h
@@ -14,4 +14,6 @@
 #define FAULT_SOLAX 3
 #define UPDATING_FW 4
 
+void transmit_can(CAN_frame_t* tx_frame, int interface);
+
 #endif