diff --git a/package/liburcu/Config.in b/package/liburcu/Config.in
index 49510da495..b5b6326878 100644
--- a/package/liburcu/Config.in
+++ b/package/liburcu/Config.in
@@ -1,6 +1,7 @@
 config BR2_PACKAGE_LIBURCU_ARCH_SUPPORTS
 	bool
 	depends on BR2_arm || BR2_armeb || BR2_aarch64 || BR2_i386 || BR2_powerpc || BR2_x86_64
+	depends on BR2_USE_MMU # fork() in test
 	default y
 
 config BR2_PACKAGE_LIBURCU