diff --git a/hardware/arduino/avr/cores/arduino/PluggableUSB.h b/hardware/arduino/avr/cores/arduino/PluggableUSB.h
index d89040eb4..23013eb78 100644
--- a/hardware/arduino/avr/cores/arduino/PluggableUSB.h
+++ b/hardware/arduino/avr/cores/arduino/PluggableUSB.h
@@ -35,12 +35,6 @@ typedef struct __attribute__((packed))
   uint8_t *endpointType;
 } PUSBCallbacks;
 
-typedef struct
-{
-  u8 interface;
-  u8 firstEndpoint;
-} PUSBReturn;
-
 class PUSBListNode {
 public:
   PUSBListNode *next = NULL;
diff --git a/hardware/arduino/sam/cores/arduino/USB/PluggableUSB.h b/hardware/arduino/sam/cores/arduino/USB/PluggableUSB.h
index 502da9ebc..75793fa32 100644
--- a/hardware/arduino/sam/cores/arduino/USB/PluggableUSB.h
+++ b/hardware/arduino/sam/cores/arduino/USB/PluggableUSB.h
@@ -35,12 +35,6 @@ typedef struct __attribute__((packed))
   uint32_t *endpointType;
 } PUSBCallbacks;
 
-typedef struct
-{
-  uint8_t interface;
-  uint8_t firstEndpoint;
-} PUSBReturn;
-
 class PUSBListNode {
 public:
   PUSBListNode *next = NULL;