diff --git a/lib/lufa/LUFA/Drivers/USB/Class/Device/AudioClassDevice.h b/lib/lufa/LUFA/Drivers/USB/Class/Device/AudioClassDevice.h
index ca63511b2..920281be5 100644
--- a/lib/lufa/LUFA/Drivers/USB/Class/Device/AudioClassDevice.h
+++ b/lib/lufa/LUFA/Drivers/USB/Class/Device/AudioClassDevice.h
@@ -377,7 +377,7 @@
 	#if !defined(__DOXYGEN__)
 		/* Function Prototypes: */
 			#if defined(__INCLUDE_FROM_AUDIO_DEVICE_C)
-				void Audio_Device_Event_Stub(void) ATTR_CONST;
+				void Audio_Device_Event_Stub(void);
 
 				void EVENT_Audio_Device_StreamStartStop(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo)
 				                                        ATTR_WEAK ATTR_NON_NULL_PTR_ARG(1) ATTR_ALIAS(Audio_Device_Event_Stub);
diff --git a/lib/lufa/LUFA/Drivers/USB/Class/Device/CDCClassDevice.h b/lib/lufa/LUFA/Drivers/USB/Class/Device/CDCClassDevice.h
index 9d5c4e5a0..f9a53851a 100644
--- a/lib/lufa/LUFA/Drivers/USB/Class/Device/CDCClassDevice.h
+++ b/lib/lufa/LUFA/Drivers/USB/Class/Device/CDCClassDevice.h
@@ -362,7 +362,7 @@
 				static int CDC_Device_getchar_Blocking(FILE* Stream) ATTR_NON_NULL_PTR_ARG(1);
 				#endif
 
-				void CDC_Device_Event_Stub(void) ATTR_CONST;
+				void CDC_Device_Event_Stub(void);
 
 				void EVENT_CDC_Device_LineEncodingChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
 				                                          ATTR_WEAK ATTR_NON_NULL_PTR_ARG(1) ATTR_ALIAS(CDC_Device_Event_Stub);
diff --git a/lib/lufa/LUFA/Drivers/USB/Class/Device/PrinterClassDevice.h b/lib/lufa/LUFA/Drivers/USB/Class/Device/PrinterClassDevice.h
index 802c5912d..5ac527935 100644
--- a/lib/lufa/LUFA/Drivers/USB/Class/Device/PrinterClassDevice.h
+++ b/lib/lufa/LUFA/Drivers/USB/Class/Device/PrinterClassDevice.h
@@ -273,7 +273,7 @@
 				static int PRNT_Device_getchar_Blocking(FILE* Stream) ATTR_NON_NULL_PTR_ARG(1);
 				#endif
 
-				void PRNT_Device_Event_Stub(void) ATTR_CONST;
+				void PRNT_Device_Event_Stub(void);
 
 				void EVENT_PRNT_Device_SoftReset(USB_ClassInfo_PRNT_Device_t* const PRNTInterfaceInfo)
 				                                 ATTR_WEAK ATTR_NON_NULL_PTR_ARG(1) ATTR_ALIAS(PRNT_Device_Event_Stub);
diff --git a/lib/lufa/LUFA/Drivers/USB/Class/Host/CDCClassHost.h b/lib/lufa/LUFA/Drivers/USB/Class/Host/CDCClassHost.h
index 86ce6def3..f5cc4906b 100644
--- a/lib/lufa/LUFA/Drivers/USB/Class/Host/CDCClassHost.h
+++ b/lib/lufa/LUFA/Drivers/USB/Class/Host/CDCClassHost.h
@@ -360,7 +360,7 @@
 				static int CDC_Host_getchar_Blocking(FILE* Stream) ATTR_NON_NULL_PTR_ARG(1);
 				#endif
 
-				void CDC_Host_Event_Stub(void) ATTR_CONST;
+				void CDC_Host_Event_Stub(void);
 
 				void EVENT_CDC_Host_ControLineStateChanged(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo)
 				                                           ATTR_WEAK ATTR_NON_NULL_PTR_ARG(1) ATTR_ALIAS(CDC_Host_Event_Stub);