diff --git a/src/compiler/nir/nir_intrinsics.py b/src/compiler/nir/nir_intrinsics.py
index bea25d30321..55e2ba8c989 100644
--- a/src/compiler/nir/nir_intrinsics.py
+++ b/src/compiler/nir/nir_intrinsics.py
@@ -1904,7 +1904,7 @@ system_value("barycentric_optimize_amd", dest_comp=1, bit_sizes=[1])
 intrinsic("strict_wqm_coord_amd", src_comp=[0], dest_comp=0, bit_sizes=[32], indices=[BASE],
           flags=[CAN_ELIMINATE])
 
-intrinsic("cmat_muladd_amd", src_comp=[16, 16, 0], dest_comp=0, bit_sizes=src2,
+intrinsic("cmat_muladd_amd", src_comp=[-1, -1, 0], dest_comp=0, bit_sizes=src2,
           indices=[SATURATE, CMAT_SIGNED_MASK], flags=[CAN_ELIMINATE])
 
 # Get the debug log buffer descriptor.