diff --git a/src/panfrost/midgard/midgard_ra.c b/src/panfrost/midgard/midgard_ra.c
index 534d095eac1..e923a3a9420 100644
--- a/src/panfrost/midgard/midgard_ra.c
+++ b/src/panfrost/midgard/midgard_ra.c
@@ -76,15 +76,15 @@ struct phys_reg {
  * by dst_offset. TODO: vec8+ */
 
 static void
-offset_swizzle(unsigned *swizzle, unsigned reg_offset, unsigned srcsize, unsigned dst_offset, unsigned dstsize)
+offset_swizzle(unsigned *swizzle, unsigned reg_offset, unsigned srcsize, unsigned dst_offset)
 {
         unsigned out[MIR_VEC_COMPONENTS];
 
         signed reg_comp = reg_offset / srcsize;
-        signed dst_comp = dst_offset / dstsize;
+        signed dst_comp = dst_offset / srcsize;
 
         assert(reg_comp * srcsize == reg_offset);
-        assert(dst_comp * dstsize == dst_offset);
+        assert(dst_comp * srcsize == dst_offset);
 
         for (signed c = 0; c < MIR_VEC_COMPONENTS; ++c) {
                 signed comp = MAX2(c - dst_comp, 0);
@@ -750,7 +750,7 @@ install_registers_instr(
                         GET_CHANNEL_COUNT(alu_opcode_props[ins->alu.op].props) ? 0 :
                         dest.offset;
 
-                offset_swizzle(ins->swizzle[0], src1.offset, src1.size, dest_offset, dest.size);
+                offset_swizzle(ins->swizzle[0], src1.offset, src1.size, dest_offset);
 
                 ins->registers.src1_reg = src1.reg;
 
@@ -770,7 +770,7 @@ install_registers_instr(
                 } else {
                         midgard_vector_alu_src mod2 =
                                 vector_alu_from_unsigned(ins->alu.src2);
-                        offset_swizzle(ins->swizzle[1], src2.offset, src2.size, dest_offset, dest.size);
+                        offset_swizzle(ins->swizzle[1], src2.offset, src2.size, dest_offset);
                         ins->alu.src2 = vector_alu_srco_unsigned(mod2);
 
                         ins->registers.src2_reg = src2.reg;
@@ -792,12 +792,12 @@ install_registers_instr(
                         assert(src.reg == 26 || src.reg == 27);
 
                         ins->load_store.reg = src.reg - 26;
-                        offset_swizzle(ins->swizzle[0], src.offset, src.size, 0, 4);
+                        offset_swizzle(ins->swizzle[0], src.offset, src.size, 0);
                } else {
                         struct phys_reg dst = index_to_reg(ctx, g, ins->dest, mir_typesize(ins));
 
                         ins->load_store.reg = dst.reg;
-                        offset_swizzle(ins->swizzle[0], 0, 4, dst.offset, dst.size);
+                        offset_swizzle(ins->swizzle[0], 0, 4, dst.offset);
                         mir_set_bytemask(ins, mir_bytemask(ins) << dst.offset);
                 }
 
@@ -836,13 +836,13 @@ install_registers_instr(
                 ins->texture.in_reg_full = 1;
                 ins->texture.in_reg_upper = 0;
                 ins->texture.in_reg_select = coord.reg - 28;
-                offset_swizzle(ins->swizzle[1], coord.offset, coord.size, 0, 4);
+                offset_swizzle(ins->swizzle[1], coord.offset, coord.size, 0);
 
                 /* Next, install the destination */
                 ins->texture.out_full = 1;
                 ins->texture.out_upper = 0;
                 ins->texture.out_reg_select = dest.reg - 28;
-                offset_swizzle(ins->swizzle[0], 0, 4, dest.offset, dest.size);
+                offset_swizzle(ins->swizzle[0], 0, 4, dest.offset);
                 mir_set_bytemask(ins, mir_bytemask(ins) << dest.offset);
 
                 /* If there is a register LOD/bias, use it */