diff --git a/libs/vkd3d-shader/dxil.c b/libs/vkd3d-shader/dxil.c
index 6b02a1084..07cfd6a1f 100644
--- a/libs/vkd3d-shader/dxil.c
+++ b/libs/vkd3d-shader/dxil.c
@@ -10133,13 +10133,13 @@ static void sm6_parser_emit_dcl_count(struct sm6_parser *dxil, enum vkd3d_shader
     ins->declaration.count = count;
 }
 
-static void sm6_parser_emit_dcl_primitive_topology(struct sm6_parser *sm6,
-        enum vkd3d_shader_opcode handler_idx, enum vkd3d_primitive_type primitive_type,
+static void sm6_parser_emit_dcl_primitive_topology(struct sm6_parser *dxil,
+        enum vkd3d_shader_opcode opcode, enum vkd3d_primitive_type primitive_type,
         unsigned int patch_vertex_count)
 {
     struct vkd3d_shader_instruction *ins;
 
-    if (!(ins = sm6_parser_add_instruction(sm6, handler_idx)))
+    if (!(ins = sm6_parser_add_instruction(dxil, opcode)))
         return;
     ins->declaration.primitive_type.type = primitive_type;
     ins->declaration.primitive_type.patch_vertex_count = patch_vertex_count;