diff --git a/src/add-ons/kernel/busses/usb/ehci.cpp b/src/add-ons/kernel/busses/usb/ehci.cpp
index f5e3ed9718..7bb245ef3f 100644
--- a/src/add-ons/kernel/busses/usb/ehci.cpp
+++ b/src/add-ons/kernel/busses/usb/ehci.cpp
@@ -98,13 +98,21 @@ print_queue(ehci_qh *queueHead)
 
 EHCI::EHCI(pci_info *info, Stack *stack)
 	:	BusManager(stack),
+		fCapabilityRegisters(NULL),
+		fOperationalRegisters(NULL),
+		fRegisterArea(-1),
 		fPCIInfo(info),
 		fStack(stack),
 		fPeriodicFrameListArea(-1),
 		fPeriodicFrameList(NULL),
+		fInterruptEntries(NULL),
+		fAsyncQueueHead(NULL),
+		fAsyncAdvanceSem(-1),
 		fFirstTransfer(NULL),
 		fLastTransfer(NULL),
+		fFinishTransfersSem(-1),
 		fFinishThread(-1),
+		fCleanupSem(-1),
 		fCleanupThread(-1),
 		fStopThreads(false),
 		fFreeListHead(NULL),