diff --git a/reactos/ntoskrnl/io/iomgr/driver.c b/reactos/ntoskrnl/io/iomgr/driver.c
index be0a0b2df43..e72691c5ccb 100644
--- a/reactos/ntoskrnl/io/iomgr/driver.c
+++ b/reactos/ntoskrnl/io/iomgr/driver.c
@@ -899,7 +899,10 @@ IopInitializeBuiltinDriver(IN PLDR_DATA_TABLE_ENTRY BootLdrEntry)
     InbvIndicateProgress();
 
     Buffer = ExAllocatePool(PagedPool, ModuleName->Length + sizeof(UNICODE_NULL));
-    ASSERT(Buffer);
+    if (Buffer == NULL)
+    {
+        return STATUS_INSUFFICIENT_RESOURCES;
+    }
 
     RtlCopyMemory(Buffer, ModuleName->Buffer, ModuleName->Length);
     Buffer[ModuleName->Length / sizeof(WCHAR)] = UNICODE_NULL;
diff --git a/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c b/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c
index 26dd95ef92f..e32c5c34956 100644
--- a/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c
+++ b/reactos/ntoskrnl/io/pnpmgr/pnpmgr.c
@@ -892,6 +892,8 @@ IopQueryDeviceCapabilities(PDEVICE_NODE DeviceNode,
                                 &DeviceCaps->UINumber,
                                 sizeof(ULONG));
       }
+
+      ZwClose(InstanceKey);
    }
 
    return Status;
@@ -1086,7 +1088,6 @@ IopCreateDeviceNode(PDEVICE_NODE ParentNode,
       Status = IopCreateDeviceKeyPath(&Node->InstancePath, REG_OPTION_VOLATILE, &InstanceHandle);
       if (!NT_SUCCESS(Status))
       {
-          ZwClose(InstanceHandle);
           ExFreePool(FullServiceName.Buffer);
           ExFreePoolWithTag(Node, TAG_IO_DEVNODE);
           return Status;