diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nv50.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nv50.cpp
index d87cdfff851..6374a24c5d5 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nv50.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nv50.cpp
@@ -831,7 +831,7 @@ NV50LoweringPreSSA::handleTXB(TexInstruction *i)
    }
    Value *flags = bld.getScratch(1, FILE_FLAGS);
    bld.setPosition(cond, true);
-   bld.mkCvt(OP_CVT, TYPE_U8, flags, TYPE_U32, cond->getDef(0));
+   bld.mkCvt(OP_CVT, TYPE_U8, flags, TYPE_U32, cond->getDef(0))->flagsDef = 0;
 
    Instruction *tex[4];
    for (l = 0; l < 4; ++l) {