diff --git a/plugins/cdvdGigaherz/src/Windows/IOCtlSrc.cpp b/plugins/cdvdGigaherz/src/Windows/IOCtlSrc.cpp
index b9a1742021..d505342ac0 100644
--- a/plugins/cdvdGigaherz/src/Windows/IOCtlSrc.cpp
+++ b/plugins/cdvdGigaherz/src/Windows/IOCtlSrc.cpp
@@ -297,6 +297,8 @@ s32 IOCtlSrc::Reopen()
 		if(device==INVALID_HANDLE_VALUE)
 			return -1;
 	}
+	// Dual layer DVDs cannot read from layer 1 without this ioctl
+	DeviceIoControl(device, FSCTL_ALLOW_EXTENDED_DASD_IO, nullptr, 0, nullptr, 0, &size, nullptr);
 
 	sessID=0;
 	DeviceIoControl(device,IOCTL_DVD_START_SESSION,NULL,0,&sessID,sizeof(DVD_SESSION_ID), &size, NULL);