diff --git a/dnn/src/naive/cond_take/opr_impl.cpp b/dnn/src/naive/cond_take/opr_impl.cpp
index 89354973..f9761a70 100644
--- a/dnn/src/naive/cond_take/opr_impl.cpp
+++ b/dnn/src/naive/cond_take/opr_impl.cpp
@@ -66,6 +66,7 @@ CondTakeImpl::Output CondTakeImpl::exec(
             break; \
         }
         MEGDNN_FOREACH_COMPUTING_DTYPE(cb)
+        cb(::megdnn::dtype::Bool)
 #undef cb
         default:
             megdnn_throw("bad mask dtype");