diff --git a/Core/Inc/Channel_Control.h b/Core/Inc/Channel_Control.h
index 898aed8..05f67b1 100644
--- a/Core/Inc/Channel_Control.h
+++ b/Core/Inc/Channel_Control.h
@@ -13,27 +13,27 @@
 typedef union {
   struct {
     uint8_t NC : 1;
-    uint8_t en13 : 1;     // inverters
-    uint8_t en2 : 1;      //servos regler
-    uint8_t en1 : 1;      //acu
-    uint8_t en4 : 1;      // reserved
-    uint8_t en11 : 1;      //lidar
-    uint8_t en8 : 1;      // sdc
-    uint8_t alwayson : 1; // en7 ist always on 
+    uint8_t inverter : 1;
+    uint8_t drs_buck : 1;
+    uint8_t acu : 1;
+    uint8_t reserved : 1;
+    uint8_t lidar : 1;
+    uint8_t sdc : 1;
+    uint8_t alwayson : 1;
   };
   uint8_t porta;
 } gpio_port_a;
 
 typedef union {
   struct {
-    uint8_t en15: 1;      // epsc
-    uint8_t en12 : 1;     // hyd aggregat 
+    uint8_t epsc: 1;
+    uint8_t hyd_pump : 1;
     uint8_t NC : 1;       
-    uint8_t en3 : 1;      // ebs cs valve
-    uint8_t en6 : 1;      // ebs valve b
-    uint8_t en5 : 1;     //ebs valve a
-    uint8_t en14 : 1;    //servos
-    uint8_t en16 : 1;     //misc
+    uint8_t ebs_cs : 1;
+    uint8_t ebs_b : 1;
+    uint8_t ebs_a : 1;
+    uint8_t drs_profet : 1;
+    uint8_t misc : 1;
   };
   uint8_t portb;
 } gpio_port_b;
diff --git a/Core/Src/Channel_Control.c b/Core/Src/Channel_Control.c
index d82ca09..20d00b3 100644
--- a/Core/Src/Channel_Control.c
+++ b/Core/Src/Channel_Control.c
@@ -38,8 +38,9 @@ void ChannelControl_init(I2C_HandleTypeDef* hi2c, TIM_HandleTypeDef* timer3,
 void ChannelControl_UpdateGPIOs(PortExtenderGPIO UpdatePorts) { // ctrl + left click auf portextender 
   EN_Ports = UpdatePorts;
   UpdatePorts.porta.alwayson = 1; // Always on stays always on
-  if (inhibit_SDC)
-    UpdatePorts.porta.en8 = 0;
+  if (inhibit_SDC) {
+    UpdatePorts.porta.sdc = 0;
+  }
   PCA9535_setGPIOPortOutput(PC9535_PORTA, UpdatePorts.porta.porta);
   PCA9535_setGPIOPortOutput(PC9535_PORTB, UpdatePorts.portb.portb);
 }