diff --git a/mindspore/ccsrc/minddata/dataset/util/allocator.h b/mindspore/ccsrc/minddata/dataset/util/allocator.h
index 2d006b418f..f6e0ef846c 100644
--- a/mindspore/ccsrc/minddata/dataset/util/allocator.h
+++ b/mindspore/ccsrc/minddata/dataset/util/allocator.h
@@ -69,7 +69,7 @@ class Allocator {
   }
 
   pointer allocate(std::size_t n) {
-    void *p;
+    void *p = nullptr;
     Status rc = pool_->Allocate(n * sizeof(T), &p);
     if (rc.IsOk()) {
       return reinterpret_cast<pointer>(p);