diff --git a/libs/vkd3d-shader/ir.c b/libs/vkd3d-shader/ir.c
index ba6c6cbb5..8ec46a218 100644
--- a/libs/vkd3d-shader/ir.c
+++ b/libs/vkd3d-shader/ir.c
@@ -11368,6 +11368,7 @@ static const struct vsir_validator_instruction_desc vsir_validator_instructions[
     [VSIR_OP_GEO] =                              {1,   2, vsir_validate_float_comparison_operation},
     [VSIR_OP_GEU] =                              {1,   2, vsir_validate_float_comparison_operation},
     [VSIR_OP_HCOS] =                             {1,   1, vsir_validate_float_elementwise_operation},
+    [VSIR_OP_HSIN] =                             {1,   1, vsir_validate_float_elementwise_operation},
     [VSIR_OP_HS_CONTROL_POINT_PHASE] =           {0,   0, vsir_validate_hull_shader_phase},
     [VSIR_OP_HS_DECLS] =                         {0,   0, vsir_validate_hull_shader_phase},
     [VSIR_OP_HS_FORK_PHASE] =                    {0,   0, vsir_validate_hull_shader_phase},