diff --git a/Core/Src/slave_monitoring.c b/Core/Src/slave_monitoring.c
index e3811eb..a6d568a 100644
--- a/Core/Src/slave_monitoring.c
+++ b/Core/Src/slave_monitoring.c
@@ -91,9 +91,10 @@ void slaves_check() {
 }
 
 void slaves_handle_panic(const uint8_t *data) {
-  uint8_t slave_id = ftcan_unmarshal_unsigned(&data, 1);
+  const uint8_t **ptr = &data;
+  uint8_t slave_id = ftcan_unmarshal_unsigned(ptr, 1);
   uint8_t idx = get_slave_index(slave_id);
-  uint8_t error_kind = ftcan_unmarshal_unsigned(&data, 1);
+  uint8_t error_kind = ftcan_unmarshal_unsigned(ptr, 1);
   switch (error_kind) {
   case SLAVE_PANIC_OT:
     slaves[idx].error.kind = SLAVE_ERR_OT;