diff --git a/Makefile b/Makefile
index c9070d0..3e1d8dd 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 UNAME ?= $(shell uname)
 CYGWIN = $(findstring CYGWIN, $(UNAME))
-MINGW = $(findstring MINGW,  $(UNAME))
+MINGW = $(findstring MINGW, $(UNAME))
 
 ifneq ("$(CYGWIN)", "")
 WINDOWS=1