diff --git a/libvips/resample/presample.h b/libvips/resample/presample.h
index 56c436e9f..152053ed2 100644
--- a/libvips/resample/presample.h
+++ b/libvips/resample/presample.h
@@ -76,12 +76,12 @@ void vips_reduceh_uchar_hwy(VipsPel *pout, VipsPel *pin,
 	short *restrict cs[VIPS_TRANSFORM_SCALE + 1],
 	double X, double hshrink);
 void vips_reducev_uchar_hwy(VipsPel *pout, VipsPel *pin,
-	int n, int ne, int lskip, const short *restrict k);
+	int n, int ne, const short *restrict k);
 
 void vips_shrinkh_uchar_hwy(VipsPel *pout, VipsPel *pin,
 	int width, int hshrink, int bands);
 void vips_shrinkv_uchar_hwy(VipsPel *pout, VipsPel *pin,
-	int ne, int vshrink, int lskip);
+	int ne, int vshrink);
 
 #ifdef __cplusplus
 }
diff --git a/libvips/resample/reducev.cpp b/libvips/resample/reducev.cpp
index 3cc3f6fbb..32828ddc5 100644
--- a/libvips/resample/reducev.cpp
+++ b/libvips/resample/reducev.cpp
@@ -623,11 +623,10 @@ vips_reducev_uchar_vector_gen(VipsRegion *out_region, void *vseq,
 		const int siy = sy & (VIPS_TRANSFORM_SCALE * 2 - 1);
 		const int ty = (siy + 1) >> 1;
 		const short *cys = reducev->matrixs[ty];
-		const int lskip = VIPS_REGION_LSKIP(ir);
 
 		vips_reducev_uchar_hwy(
 			q, p,
-			reducev->n_point, ne, lskip, cys);
+			reducev->n_point, ne, cys);
 
 		Y += reducev->vshrink;
 	}
diff --git a/libvips/resample/reducev_hwy.cpp b/libvips/resample/reducev_hwy.cpp
index 663de03a3..bda499368 100644
--- a/libvips/resample/reducev_hwy.cpp
+++ b/libvips/resample/reducev_hwy.cpp
@@ -79,11 +79,9 @@ constexpr DI32 di32;
 
 HWY_ATTR void
 vips_reducev_uchar_hwy(VipsPel *pout, VipsPel *pin,
-	int32_t n, int32_t ne, int32_t lskip, const int16_t *HWY_RESTRICT k)
+	int32_t n, int32_t ne, const int16_t *HWY_RESTRICT k)
 {
 #if HWY_TARGET != HWY_SCALAR
-	const auto l1 = lskip / sizeof(uint8_t);
-
 #if !defined(HAVE_HWY_1_1_0) && \
 	(HWY_ARCH_RVV || (HWY_ARCH_ARM_A64 && HWY_TARGET <= HWY_SVE))
 	/* Ensure we do not cross 128-bit block boundaries on RVV/SVE.
@@ -130,9 +128,9 @@ vips_reducev_uchar_hwy(VipsPel *pout, VipsPel *pin,
 			auto mmk = BitCast(di16, Set(di32, *(int32_t *) &k[i]));
 
 			auto top = LoadU(du8, p); /* top line */
-			p += l1;
+			p += ne;
 			auto bottom = LoadU(du8, p); /* bottom line */
-			p += l1;
+			p += ne;
 
 			auto source = InterleaveLower(top, bottom);
 			auto pix = BitCast(di16, InterleaveLower(source, zero));
@@ -160,7 +158,7 @@ vips_reducev_uchar_hwy(VipsPel *pout, VipsPel *pin,
 			auto mmk = Set(di16, k[i]);
 
 			auto top = LoadU(du8, p);
-			p += l1;
+			p += ne;
 
 			auto source = InterleaveLower(top, zero);
 			auto pix = BitCast(di16, InterleaveLower(source, zero));
@@ -251,9 +249,9 @@ vips_reducev_uchar_hwy(VipsPel *pout, VipsPel *pin,
 			auto mmk = BitCast(di16, Set(di32, *(int32_t *) &k[i]));
 
 			auto top = LoadU(du8x16, p); /* top line */
-			p += l1;
+			p += ne;
 			auto bottom = LoadU(du8x16, p); /* bottom line */
-			p += l1;
+			p += ne;
 
 			auto source = InterleaveLower(top, bottom);
 			auto pix = PromoteTo(di16, source);
@@ -265,7 +263,7 @@ vips_reducev_uchar_hwy(VipsPel *pout, VipsPel *pin,
 			auto mmk = Set(di16, k[i]);
 
 			auto top = LoadU(du8x32, p);
-			p += l1;
+			p += ne;
 
 			auto source = PromoteTo(di32, top);
 			auto pix = BitCast(di16, source);
@@ -300,10 +298,10 @@ HWY_EXPORT(vips_reducev_uchar_hwy);
 
 void
 vips_reducev_uchar_hwy(VipsPel *pout, VipsPel *pin,
-	int n, int ne, int lskip, const short *restrict k)
+	int n, int ne, const short *restrict k)
 {
 	/* clang-format off */
-	HWY_DYNAMIC_DISPATCH(vips_reducev_uchar_hwy)(pout, pin, n, ne, lskip, k);
+	HWY_DYNAMIC_DISPATCH(vips_reducev_uchar_hwy)(pout, pin, n, ne, k);
 	/* clang-format on */
 }
 #endif /*HWY_ONCE*/
diff --git a/libvips/resample/shrinkv.c b/libvips/resample/shrinkv.c
index a2d7a1e5e..0d397c898 100644
--- a/libvips/resample/shrinkv.c
+++ b/libvips/resample/shrinkv.c
@@ -363,8 +363,6 @@ vips_shrinkv_uchar_vector_gen(VipsRegion *out_region,
 
 		VIPS_GATE_START("vips_shrinkv_uchar_vector_gen: work");
 
-		const int lskip = VIPS_REGION_LSKIP(ir);
-
 		// each output line
 		for (y1 = 0; y1 < chunk_height; y1++) {
 			// top of this line in the input
@@ -373,7 +371,7 @@ vips_shrinkv_uchar_vector_gen(VipsRegion *out_region,
 			VipsPel *q = VIPS_REGION_ADDR(out_region, r->left, r->top + y + y1);
 			VipsPel *p = VIPS_REGION_ADDR(ir, s.left, top);
 
-			vips_shrinkv_uchar_hwy(q, p, ne, shrink->vshrink, lskip);
+			vips_shrinkv_uchar_hwy(q, p, ne, shrink->vshrink);
 		}
 
 		VIPS_GATE_STOP("vips_shrinkv_uchar_vector_gen: work");
diff --git a/libvips/resample/shrinkv_hwy.cpp b/libvips/resample/shrinkv_hwy.cpp
index c7e2528bf..c72b673dd 100644
--- a/libvips/resample/shrinkv_hwy.cpp
+++ b/libvips/resample/shrinkv_hwy.cpp
@@ -74,11 +74,9 @@ constexpr int32_t max_bits = 1 << 8;
 
 HWY_ATTR void
 vips_shrinkv_uchar_hwy(VipsPel *pout, VipsPel *pin,
-	int32_t ne, int32_t vshrink, int32_t lskip)
+	int32_t ne, int32_t vshrink)
 {
 #if HWY_TARGET != HWY_SCALAR
-	const auto l1 = lskip / sizeof(uint8_t);
-
 #if !defined(HAVE_HWY_1_1_0) && \
 	(HWY_ARCH_RVV || (HWY_ARCH_ARM_A64 && HWY_TARGET <= HWY_SVE))
 	/* Ensure we do not cross 128-bit block boundaries on RVV/SVE.
@@ -105,9 +103,9 @@ vips_shrinkv_uchar_hwy(VipsPel *pout, VipsPel *pin,
 		int32_t yy = 0;
 		for (; yy + 2 <= vshrink; yy += 2) {
 			auto pix0 = PromoteTo(du16, LoadU(du8x16, p));
-			p += l1;
+			p += ne;
 			auto pix1 = PromoteTo(du16, LoadU(du8x16, p));
-			p += l1;
+			p += ne;
 
 			pix0 = Add(pix0, pix1);
 
@@ -116,7 +114,7 @@ vips_shrinkv_uchar_hwy(VipsPel *pout, VipsPel *pin,
 		}
 		for (; yy < vshrink; ++yy) {
 			auto pix0 = PromoteTo(du16, LoadU(du8x16, p));
-			p += l1;
+			p += ne;
 
 			sum0 = Add(sum0, BitCast(du32, InterleaveLower(du16, pix0, zero)));
 			sum1 = Add(sum1, BitCast(du32, InterleaveUpper(du16, pix0, zero)));
@@ -159,16 +157,16 @@ vips_shrinkv_uchar_hwy(VipsPel *pout, VipsPel *pin,
 		int32_t yy = 0;
 		for (; yy + 2 <= vshrink; yy += 2) {
 			auto pix0 = PromoteTo(du32, LoadU(du8x32, p));
-			p += l1;
+			p += ne;
 			auto pix1 = PromoteTo(du32, LoadU(du8x32, p));
-			p += l1;
+			p += ne;
 
 			pix0 = Add(pix0, pix1);
 			sum0 = Add(sum0, pix0);
 		}
 		for (; yy < vshrink; ++yy) {
 			auto pix0 = PromoteTo(du32, LoadU(du8x32, p));
-			p += l1;
+			p += ne;
 
 			sum0 = Add(sum0, pix0);
 		}
@@ -195,11 +193,10 @@ HWY_EXPORT(vips_shrinkv_uchar_hwy);
 
 void
 vips_shrinkv_uchar_hwy(VipsPel *pout, VipsPel *pin,
-	int ne, int vshrink, int lskip)
+	int ne, int vshrink)
 {
 	/* clang-format off */
-	HWY_DYNAMIC_DISPATCH(vips_shrinkv_uchar_hwy)(pout, pin,
-		ne, vshrink, lskip);
+	HWY_DYNAMIC_DISPATCH(vips_shrinkv_uchar_hwy)(pout, pin, ne, vshrink);
 	/* clang-format on */
 }
 #endif /*HWY_ONCE*/