diff --git a/package/wpa_supplicant/Config.in b/package/wpa_supplicant/Config.in
index 6b1c492256..6ebd2fedc1 100644
--- a/package/wpa_supplicant/Config.in
+++ b/package/wpa_supplicant/Config.in
@@ -1,5 +1,6 @@
 config BR2_PACKAGE_WPA_SUPPLICANT
 	bool "wpa_supplicant"
+	depends on BR2_USE_MMU # fork()
 	depends on !BR2_avr32 # no epoll_create1
 	help
 	  WPA supplicant for secure wireless networks