diff --git a/libs/vkd3d-shader/ir.c b/libs/vkd3d-shader/ir.c
index 4e0b1cc8e..9260fa340 100644
--- a/libs/vkd3d-shader/ir.c
+++ b/libs/vkd3d-shader/ir.c
@@ -11403,6 +11403,7 @@ static const struct vsir_validator_instruction_desc vsir_validator_instructions[
     [VSIR_OP_IADD] =                             {1,   2, vsir_validate_integer_elementwise_operation},
     [VSIR_OP_IEQ] =                              {1,   2, vsir_validate_integer_comparison_operation},
     [VSIR_OP_IGE] =                              {1,   2, vsir_validate_integer_comparison_operation},
+    [VSIR_OP_ILT] =                              {1,   2, vsir_validate_integer_comparison_operation},
     [VSIR_OP_DCL_GS_INSTANCES] =                 {0,   0, vsir_validate_dcl_gs_instances},
     [VSIR_OP_DCL_HS_MAX_TESSFACTOR] =            {0,   0, vsir_validate_dcl_hs_max_tessfactor},
     [VSIR_OP_DCL_INDEX_RANGE] =                  {0,   0, vsir_validate_dcl_index_range},