diff --git a/reactos/drivers/video/videoprt/videoprt.c b/reactos/drivers/video/videoprt/videoprt.c
index 7e9566a1921..39680805c22 100644
--- a/reactos/drivers/video/videoprt/videoprt.c
+++ b/reactos/drivers/video/videoprt/videoprt.c
@@ -1342,7 +1342,7 @@ VideoPortAcquireDeviceLock(
    DeviceExtension = VIDEO_PORT_GET_DEVICE_EXTENSION(HwDeviceExtension);
    Status = KeWaitForMutexObject(&DeviceExtension->DeviceLock, Executive,
                                  KernelMode, FALSE, NULL);
-   ASSERT(Status == STATUS_SUCCESS);
+   // ASSERT(Status == STATUS_SUCCESS);
 }
 
 /*
@@ -1360,7 +1360,7 @@ VideoPortReleaseDeviceLock(
    DPRINT("VideoPortReleaseDeviceLock\n");
    DeviceExtension = VIDEO_PORT_GET_DEVICE_EXTENSION(HwDeviceExtension);
    Status = KeReleaseMutex(&DeviceExtension->DeviceLock, FALSE);
-   ASSERT(Status == 0);
+   //ASSERT(Status == 0);
 }
 
 /*
@@ -1373,3 +1373,17 @@ VpNotifyEaData(
    IN PVOID Data)
 {
 }
+
+/*
+ * @implemented
+ */
+PVOID NTAPI
+VideoPortAllocateContiguousMemory(
+   IN PVOID HwDeviceExtension,
+   IN ULONG NumberOfBytes,
+   IN PHYSICAL_ADDRESS HighestAcceptableAddress
+    )
+{
+
+    return MmAllocateContiguousMemory(NumberOfBytes, HighestAcceptableAddress);
+}
diff --git a/reactos/drivers/video/videoprt/videoprt.def b/reactos/drivers/video/videoprt/videoprt.def
index ec406de5642..037160b7e2f 100644
--- a/reactos/drivers/video/videoprt/videoprt.def
+++ b/reactos/drivers/video/videoprt/videoprt.def
@@ -8,7 +8,7 @@ VideoPortAcquireSpinLock@12
 VideoPortAcquireSpinLockAtDpcLevel@8
 VideoPortAllocateBuffer@12
 VideoPortAllocateCommonBuffer@24
-;VideoPortAllocateContiguousMemory
+VideoPortAllocateContiguousMemory
 VideoPortAllocatePool@16
 ;VideoPortAssociateEventsWithDmaHandle
 VideoPortCheckForDeviceExistence@28