diff --git a/Makefile b/Makefile
index a812017..61ad341 100644
--- a/Makefile
+++ b/Makefile
@@ -26,7 +26,7 @@ ifeq ($(WINDOWS),1)
 LDFLAGS  += -lopengl32 -lglu32 -lmingw32
 TARGET   := $(TARGET).exe
 SSNAME   := dwscr.scr
-INSTALLDIR := C:\WINDOWS
+INSTALLDIR := C:/WINDOWS
 OBJS     += displayinfo-win32.o
 else
 LDFLAGS  += -lGL -lGLU
@@ -64,7 +64,7 @@ ss/ss.a:
 ifeq ($(WINDOWS),1)
 .PHONY: install
 install:
-	cp $(TARGET) $(INSTALLDIR)\$(SSNAME)
+	cp $(TARGET) $(INSTALLDIR)/$(SSNAME)
 endif
 
 .PHONY: clean