diff --git a/paddle/fluid/framework/mixed_vector.h b/paddle/fluid/framework/mixed_vector.h
index 6a6fa538718837a958b7d82c37f583f62f4bf96e..d99a15547b77a0e0d71b14bd1c798cd1485720b0 100644
--- a/paddle/fluid/framework/mixed_vector.h
+++ b/paddle/fluid/framework/mixed_vector.h
@@ -176,7 +176,7 @@ class Vector {
 
   // resize the vector
   void resize(size_t size) {
-    if (size + 1 < capacity()) {
+    if (size + 1 <= capacity()) {
       size_ = size;
     } else {
       MutableCPU();
diff --git a/paddle/fluid/framework/mixed_vector_test.cu b/paddle/fluid/framework/mixed_vector_test.cu
index 4bf78499f2fda2d2631e05ddcbbd0bc49498af1a..d57f82510833d6a0cea7009cf1f0b49543812f8d 100644
--- a/paddle/fluid/framework/mixed_vector_test.cu
+++ b/paddle/fluid/framework/mixed_vector_test.cu
@@ -104,3 +104,11 @@ TEST(mixed_vector, ForEach) {
   for (auto& v : tmp) {
   }
 }
+
+TEST(mixed_vector, Reserve) {
+  paddle::framework::Vector<int> vec;
+  vec.reserve(1);
+  vec.push_back(0);
+  vec.push_back(0);
+  vec.push_back(0);
+}