diff --git a/reactos/Makefile b/reactos/Makefile
index 6258de5190b..ccf55988031 100644
--- a/reactos/Makefile
+++ b/reactos/Makefile
@@ -115,8 +115,7 @@ all: makefile.auto
 
 ifeq ($(HOST),)
 ifeq ($(word 1,$(shell gcc -dumpmachine)),mingw32)
-ifeq ($(findstring msys,$(-shell sh --version)),msys)
-export OSTYPE = msys
+ifeq ($(OSTYPE),msys)
 HOST=mingw32-linux
 else
 HOST=mingw32-windows
@@ -215,7 +214,7 @@ ifeq ($(HOST),mingw32-linux)
 	export EXEPREFIX = ./
 ifeq ($(OSTYPE),msys)
 	export EXEPOSTFIX = .exe
-else	
+else
 	export EXEPOSTFIX =
 endif
 	export SEP = /