diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_target.h b/src/gallium/drivers/nouveau/codegen/nv50_ir_target.h
index 4a701f7cb9d..eaf50cc19be 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_target.h
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_target.h
@@ -175,6 +175,8 @@ public:
 
    virtual void parseDriverInfo(const struct nv50_ir_prog_info *info) {
       threads = info->prop.cp.numThreads;
+      if (threads == 0)
+         threads = info->target >= NVISA_GK104_CHIPSET ? 1024 : 512;
    }
 
    virtual bool runLegalizePass(Program *, CGStage stage) const = 0;