diff --git a/Makefile b/Makefile
index 5425e969f..2d08430cb 100644
--- a/Makefile
+++ b/Makefile
@@ -50,10 +50,8 @@ TESTFLAGS_RACE=
 GO_GCFLAGS=
 GO_BUILD_FLAGS=
 
-#Detect the target os
-include Makefile.OS
 #include platform specific makefile
-include Makefile.$(target_os)
+-include Makefile.$(GOOS)
 
 # Add the "incremental" build option `-i` (installs the packages that are
 # dependencies of the target) to speed up future builds. Only for native builds,
diff --git a/Makefile.OS b/Makefile.OS
deleted file mode 100644
index 6a5fe010a..000000000
--- a/Makefile.OS
+++ /dev/null
@@ -1,16 +0,0 @@
-#Detect the OS, and return installos value same as GOOS
-target_os =
-ifeq ($(OS),Windows_NT)
-    target_os = windows
-else
-    UNAME_S := $(shell uname -s)
-    ifeq ($(UNAME_S),Linux)
-        target_os = linux
-    endif
-    ifeq ($(UNAME_S),Darwin)
-        target_os = darwin
-    endif
-    ifeq ($(UNAME_S),FreeBSD)
-        target_os = freebsd
-    endif
-endif