diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
index 3b85151939d..4e50d954daf 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
@@ -1493,6 +1493,8 @@ ConstantFolding::opnd(Instruction *i, ImmediateValue &imm0, int s)
          int muls;
          if (isFloatType(si->dType))
             return false;
+         if (si->subOp)
+            return false;
          if (si->src(1).getImmediate(imm1))
             muls = 1;
          else if (si->src(0).getImmediate(imm1))