diff --git a/paddle/platform/gpu_info.cc b/paddle/platform/gpu_info.cc
index 63a33517086ec96711e610b766d19431e084e047..4fa2eaed31c6e9368459c2da6f8b0667b453d58c 100644
--- a/paddle/platform/gpu_info.cc
+++ b/paddle/platform/gpu_info.cc
@@ -18,8 +18,8 @@ limitations under the License. */
 
 #include "paddle/platform/enforce.h"
 
-DEFINE_double(fraction_of_gpu_memory_to_use, 0.95,
-              "Default use 95% of GPU memory for PaddlePaddle,"
+DEFINE_double(fraction_of_gpu_memory_to_use, 0.92,
+              "Default use 92% of GPU memory for PaddlePaddle,"
               "reserve the rest for page tables, etc");
 
 namespace paddle {