diff --git a/Makefile b/Makefile
index 7d314af1..9d42e5a2 100644
--- a/Makefile
+++ b/Makefile
@@ -40,6 +40,9 @@ SED = sed
 
 ifeq (${OS},Darwin)
 FIREFOX_DEFAULT = $(wildcard ${HOME}/Library/Application\ Support/Firefox/Profiles/*default)
+else ifeq ($(findstring CYGWIN,${OS}),CYGWIN)
+HOME = $(shell cygpath -sm "${USERPROFILE}")
+FIREFOX_DEFAULT = $(wildcard ${HOME}/Application\ Data/Mozilla/Firefox/Profiles/*default)
 else
 FIREFOX_DEFAULT = $(wildcard ${HOME}/.mozilla/firefox/*.default)
 endif