diff --git a/package/tcpreplay/Config.in b/package/tcpreplay/Config.in
index 6d3a3bf4de..7337070a8e 100644
--- a/package/tcpreplay/Config.in
+++ b/package/tcpreplay/Config.in
@@ -1,5 +1,6 @@
 config BR2_PACKAGE_TCPREPLAY
 	bool "tcpreplay"
+	depends on BR2_USE_MMU # fork()
 	select BR2_PACKAGE_LIBPCAP
 	help
 	  Tcpreplay is a tool for replaying network traffic from files saved