diff --git a/tests/referrers.sh b/tests/referrers.sh
index 9744a30d4..2f8a1a465 100644
--- a/tests/referrers.sh
+++ b/tests/referrers.sh
@@ -1,5 +1,8 @@
 source common.sh
 
+# This takes way to long on Cygwin (because process creation is so slow...).
+if test "$system" = i686-cygwin; then exit 0; fi
+
 max=5000
 
 reference=$NIX_STORE_DIR/abcdef