diff --git a/paddle/platform/gpu_info.h b/paddle/platform/gpu_info.h
index 6a998382419376384a5d592efcb2bccbc590ce61..ed2420b8740e583d307f6836a70fe7e1c780e28b 100644
--- a/paddle/platform/gpu_info.h
+++ b/paddle/platform/gpu_info.h
@@ -24,7 +24,8 @@ namespace paddle {
 namespace platform {
 
 //! Environment variable: fraction of GPU memory to use on each device.
-const std::string kEnvFractionGpuMemoryToUse = "FRACTION_GPU_MEMORY_TO_USE";
+const std::string kEnvFractionGpuMemoryToUse =
+    "PADDLE_FRACTION_GPU_MEMORY_TO_USE";
 
 //! Get the total number of GPU devices in system.
 int GetDeviceCount();