diff --git a/libs/vkd3d-shader/ir.c b/libs/vkd3d-shader/ir.c
index 2437a7067..a9a8689f7 100644
--- a/libs/vkd3d-shader/ir.c
+++ b/libs/vkd3d-shader/ir.c
@@ -11117,6 +11117,7 @@ static const struct vsir_validator_instruction_desc vsir_validator_instructions[
     [VKD3DSIH_BRANCH] =                           {0, ~0u, vsir_validate_branch},
     [VKD3DSIH_DADD] =                             {1,   2, vsir_validate_double_elementwise_operation},
     [VKD3DSIH_DDIV] =                             {1,   2, vsir_validate_double_elementwise_operation},
+    [VKD3DSIH_DFMA] =                             {1,   3, vsir_validate_double_elementwise_operation},
     [VKD3DSIH_HS_CONTROL_POINT_PHASE] =           {0,   0, vsir_validate_hull_shader_phase},
     [VKD3DSIH_HS_DECLS] =                         {0,   0, vsir_validate_hull_shader_phase},
     [VKD3DSIH_HS_FORK_PHASE] =                    {0,   0, vsir_validate_hull_shader_phase},