diff --git a/tmk_core/protocol/chibios/usb_main.c b/tmk_core/protocol/chibios/usb_main.c
index d9aa351ecbe2..bd8af6d194fe 100644
--- a/tmk_core/protocol/chibios/usb_main.c
+++ b/tmk_core/protocol/chibios/usb_main.c
@@ -1074,7 +1074,7 @@ void console_task(void) {
     uint8_t buffer[CONSOLE_EPSIZE];
     size_t  size = 0;
     do {
-        size_t size = chnReadTimeout(&drivers.console_driver.driver, buffer, sizeof(buffer), TIME_IMMEDIATE);
+        size = chnReadTimeout(&drivers.console_driver.driver, buffer, sizeof(buffer), TIME_IMMEDIATE);
         if (size > 0) {
             console_receive(buffer, size);
         }
@@ -1102,7 +1102,7 @@ void raw_hid_task(void) {
     uint8_t buffer[RAW_EPSIZE];
     size_t  size = 0;
     do {
-        size_t size = chnReadTimeout(&drivers.raw_driver.driver, buffer, sizeof(buffer), TIME_IMMEDIATE);
+        size = chnReadTimeout(&drivers.raw_driver.driver, buffer, sizeof(buffer), TIME_IMMEDIATE);
         if (size > 0) {
             raw_hid_receive(buffer, size);
         }
@@ -1125,7 +1125,7 @@ void midi_ep_task(void) {
     uint8_t buffer[MIDI_STREAM_EPSIZE];
     size_t  size = 0;
     do {
-        size_t size = chnReadTimeout(&drivers.midi_driver.driver, buffer, sizeof(buffer), TIME_IMMEDIATE);
+        size = chnReadTimeout(&drivers.midi_driver.driver, buffer, sizeof(buffer), TIME_IMMEDIATE);
         if (size > 0) {
             MIDI_EventPacket_t event;
             recv_midi_packet(&event);