diff --git a/package/trinity/Config.in b/package/trinity/Config.in
index 5c4c7c801d..2495e5d473 100644
--- a/package/trinity/Config.in
+++ b/package/trinity/Config.in
@@ -1,5 +1,6 @@
 config BR2_PACKAGE_TRINITY
 	bool "trinity"
+	depends on BR2_USE_MMU # fork()
 	depends on BR2_aarch64 || BR2_arm || BR2_armeb || BR2_i386 || \
 		BR2_mips || BR2_mipsel || BR2_powerpc || BR2_powerpc64 || \
 		BR2_powerpc64le || BR2_sparc || BR2_x86_64