diff --git a/libs/vkd3d-shader/dxil.c b/libs/vkd3d-shader/dxil.c
index c7af58118..21142c8f6 100644
--- a/libs/vkd3d-shader/dxil.c
+++ b/libs/vkd3d-shader/dxil.c
@@ -4674,11 +4674,11 @@ static void sm6_parser_emit_binop(struct sm6_parser *sm6, const struct dxil_reco
         case VSIR_OP_ISHL:
             silence_warning = !(flags & ~(OB_NO_UNSIGNED_WRAP | OB_NO_SIGNED_WRAP));
             break;
+        case VSIR_OP_IDIV:
         case VSIR_OP_ISHR:
             type_flags |= DXIL_TYPE_SIGNED;
             /* fall through */
         case VSIR_OP_USHR:
-        case VSIR_OP_IDIV:
         case VSIR_OP_UDIV_SIMPLE:
         case VSIR_OP_IREM:
         case VSIR_OP_UREM:
diff --git a/libs/vkd3d-shader/ir.c b/libs/vkd3d-shader/ir.c
index 13ea8a433..6920f34e7 100644
--- a/libs/vkd3d-shader/ir.c
+++ b/libs/vkd3d-shader/ir.c
@@ -12833,6 +12833,7 @@ static const struct vsir_validator_instruction_desc vsir_validator_instructions[
     [VSIR_OP_HS_JOIN_PHASE] =                    {0,   0, vsir_validate_hull_shader_phase},
     [VSIR_OP_HTAN] =                             {1,   1, vsir_validate_float_elementwise_operation},
     [VSIR_OP_IADD] =                             {1,   2, vsir_validate_integer_elementwise_operation},
+    [VSIR_OP_IDIV] =                             {1,   2, vsir_validate_signed_integer_elementwise_operation},
     [VSIR_OP_IEQ] =                              {1,   2, vsir_validate_integer_comparison_operation},
     [VSIR_OP_IF] =                               {0,   1, vsir_validate_if},
     [VSIR_OP_IFC] =                              {0,   2, vsir_validate_ifc},