diff --git a/arch/m68knommu/platform/68328/entry.S b/arch/m68knommu/platform/68328/entry.S
index 0f5d1fe..7d8990d 100644
--- a/arch/m68knommu/platform/68328/entry.S
+++ b/arch/m68knommu/platform/68328/entry.S
@@ -79,7 +79,7 @@
 	movel	%sp@(PT_ORIG_D0),%d0
 
 	movel	%sp,%d1			/* get thread_info pointer */
-	andl	#0xffffe000,%d1
+	andl	#-THREAD_SIZE,%d1
 	movel	%d1,%a2
 	btst    #TIF_SYSCALL_TRACE,%a2@(TI_FLAGS)
 	jne	do_trace
@@ -105,7 +105,7 @@
 	andw	#ALLOWINT,%sr
 
 	movel	%sp,%d1			/* get thread_info pointer */
-	andl	#0xffffe000,%d1
+	andl	#-THREAD_SIZE,%d1
 	movel	%d1,%a2
 	move	%a2@(TI_FLAGS),%d1	/* thread_info->flags */
 	andl	#_TIF_WORK_MASK,%d1
diff --git a/arch/m68knommu/platform/68360/entry.S b/arch/m68knommu/platform/68360/entry.S
index f7bc80a..8ff48ad 100644
--- a/arch/m68knommu/platform/68360/entry.S
+++ b/arch/m68knommu/platform/68360/entry.S
@@ -96,7 +96,7 @@
 	andw	#ALLOWINT,%sr
 
 	movel	%sp,%d1			/* get thread_info pointer */
-	andl	#0xffffe000,%d1
+	andl	#-THREAD_SIZE,%d1
 	movel	%d1,%a2
 	move	%a2@(TI_FLAGS),%d1	/* thread_info->flags */
 	andl	#_TIF_WORK_MASK,%d1