diff --git a/nubus-to-ztex-gateware/DeclROM/NuBusFPGADrvr.s b/nubus-to-ztex-gateware/DeclROM/NuBusFPGADrvr.s
index 1add7f2..ca8a108 100644
--- a/nubus-to-ztex-gateware/DeclROM/NuBusFPGADrvr.s
+++ b/nubus-to-ztex-gateware/DeclROM/NuBusFPGADrvr.s
@@ -82,9 +82,7 @@ interruptRoutine:
 	movel %a1,%d0
 	roll #8,%d0
 	andiw #15,%d0
-	moveal #0xd28,%a0 /*  JVBLTask */
-	/* other codes don't need the intermediate moveal, what's the proper syntax ? */
-	moveal (%a0),%a0
+	moveal 0xd28,%a0 /*  JVBLTask */
 	jsr (%a0)
 	moveq #1,%d0
 	rts
diff --git a/nubus-to-ztex-gateware/DeclROM/NuBusFPGARAMDskDrvr_OpenClose.c b/nubus-to-ztex-gateware/DeclROM/NuBusFPGARAMDskDrvr_OpenClose.c
index 53713d6..eb60cc5 100644
--- a/nubus-to-ztex-gateware/DeclROM/NuBusFPGARAMDskDrvr_OpenClose.c
+++ b/nubus-to-ztex-gateware/DeclROM/NuBusFPGARAMDskDrvr_OpenClose.c
@@ -138,7 +138,7 @@ OSErr cNuBusFPGARAMDskClose(IOParamPtr pb, /* DCtlPtr */ AuxDCEPtr dce)
 	/* write_reg(dce, GOBOFB_DEBUG, 0xDEAD0001); */
 	
 	if (dce->dCtlStorage) {
-		HUnlock(dce->dCtlStorage);
+		/* HUnlock(dce->dCtlStorage); */ /* not needed before DisposeHandle */
 		DisposeHandle(dce->dCtlStorage);
 		dce->dCtlStorage = NULL;
 	}