diff --git a/package/libev/Config.in b/package/libev/Config.in
index 71abe7737d..fd74f55824 100644
--- a/package/libev/Config.in
+++ b/package/libev/Config.in
@@ -1,5 +1,7 @@
 config BR2_PACKAGE_LIBEV
 	bool "libev"
+	# needs memory fences
+	depends on !BR2_avr32
 	help
 	  Userspace library for handling asynchronous notifications