diff --git a/libs/vkd3d-shader/dxil.c b/libs/vkd3d-shader/dxil.c
index 7099bcc9..1cf01616 100644
--- a/libs/vkd3d-shader/dxil.c
+++ b/libs/vkd3d-shader/dxil.c
@@ -9719,10 +9719,10 @@ static void sm6_parser_emit_dcl_tessellator_domain(struct sm6_parser *sm6,
     ins->declaration.tessellator_domain = tessellator_domain;
 }
 
-static void sm6_parser_validate_control_point_count(struct sm6_parser *sm6, unsigned int count,
-        const char *type)
+static void sm6_parser_validate_control_point_count(struct sm6_parser *sm6,
+        unsigned int count, bool allow_zero, const char *type)
 {
-    if (!count || count > 32)
+    if ((!count && !allow_zero) || count > 32)
     {
         WARN("%s control point count %u invalid.\n", type, count);
         vkd3d_shader_parser_error(&sm6->p, VKD3D_SHADER_ERROR_DXIL_INVALID_PROPERTIES,
@@ -9951,7 +9951,7 @@ static enum vkd3d_tessellator_domain sm6_parser_ds_properties_init(struct sm6_pa
     }
 
     sm6_parser_emit_dcl_tessellator_domain(sm6, operands[0]);
-    sm6_parser_validate_control_point_count(sm6, operands[1], "Domain shader input");
+    sm6_parser_validate_control_point_count(sm6, operands[1], true, "Domain shader input");
     sm6->p.program->input_control_point_count = operands[1];
 
     return operands[0];
@@ -10010,9 +10010,9 @@ static enum vkd3d_tessellator_domain sm6_parser_hs_properties_init(struct sm6_pa
         }
     }
 
-    sm6_parser_validate_control_point_count(sm6, operands[1], "Hull shader input");
+    sm6_parser_validate_control_point_count(sm6, operands[1], false, "Hull shader input");
     program->input_control_point_count = operands[1];
-    sm6_parser_validate_control_point_count(sm6, operands[2], "Hull shader output");
+    sm6_parser_validate_control_point_count(sm6, operands[2], false, "Hull shader output");
     sm6_parser_emit_dcl_count(sm6, VKD3DSIH_DCL_OUTPUT_CONTROL_POINT_COUNT, operands[2]);
     program->output_control_point_count = operands[2];
     sm6_parser_emit_dcl_tessellator_domain(sm6, operands[3]);