diff --git a/core/main.mk b/core/main.mk
index 145a3f5..c8606e7 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -37,7 +37,9 @@
 #TOPDIR := $(TOP)/
 #endif
 
-# check for broken versions of make
+# Check for broken versions of make.
+# (Allow any version under Cygwin since we don't actually build the platform there.)
+ifeq (,$(findstring CYGWIN,$(shell uname -sm)))
 ifeq (0,$(shell expr $$(echo $(MAKE_VERSION) | sed "s/[^0-9\.].*//") = 3.81))
 $(warning ********************************************************************************)
 $(warning *  You are using version $(MAKE_VERSION) of make.)
@@ -46,6 +48,7 @@
 $(warning ********************************************************************************)
 $(error stopping)
 endif
+endif
 
 TOP := .
 TOPDIR :=