diff --git a/lite/demo/cxx/Makefile.def b/lite/demo/cxx/Makefile.def
index e81c07824cbe672ec2405605c7852509f942d8c5..800331035323735c01b04940e70fd034ede51c84 100644
--- a/lite/demo/cxx/Makefile.def
+++ b/lite/demo/cxx/Makefile.def
@@ -1,5 +1,5 @@
 # get the name of current operation system: Linux or Darwin
-SYSTEM=$(shell "uname -s")
+SYSTEM=$(shell "uname")
 
 CXX_DEFINES = -DARM_WITH_OMP -DHPPL_STUB_FUNC -DLITE_WITH_ARM -DLITE_WITH_LIGHT_WEIGHT_FRAMEWORK \
               -DLITE_WITH_LINUX -DPADDLE_DISABLE_PROFILER -DPADDLE_NO_PYTHON -DPADDLE_WITH_TESTING