diff --git a/package/bluez5_utils/Config.in b/package/bluez5_utils/Config.in
index 49bb719102..2fe25466b4 100644
--- a/package/bluez5_utils/Config.in
+++ b/package/bluez5_utils/Config.in
@@ -2,7 +2,7 @@ config BR2_PACKAGE_BLUEZ5_UTILS
 	bool "bluez-utils"
 	depends on BR2_USE_WCHAR # libglib2
 	depends on BR2_TOOLCHAIN_HAS_THREADS # dbus, libglib2
-	depends on BR2_USE_MMU # dbus
+	depends on BR2_USE_MMU # dbus, ell
 	depends on !BR2_STATIC_LIBS # uses dlfcn
 	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4
 	depends on BR2_TOOLCHAIN_HAS_SYNC_4
diff --git a/package/ell/Config.in b/package/ell/Config.in
index c7c9164816..124a57f7e9 100644
--- a/package/ell/Config.in
+++ b/package/ell/Config.in
@@ -1,5 +1,6 @@
 config BR2_PACKAGE_ELL
 	bool "ell"
+	depends on BR2_USE_MMU # fork()
 	depends on BR2_TOOLCHAIN_HAS_SYNC_4
 	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12
 	depends on BR2_USE_WCHAR
@@ -9,5 +10,6 @@ config BR2_PACKAGE_ELL
 	  https://01.org/ell
 
 comment "ell needs a toolchain w/ wchar, headers >= 4.12"
+	depends on BR2_USE_MMU
 	depends on BR2_TOOLCHAIN_HAS_SYNC_4
 	depends on !BR2_USE_WCHAR || !BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12
diff --git a/package/iwd/Config.in b/package/iwd/Config.in
index e4b0ead882..d8fb6a6ea0 100644
--- a/package/iwd/Config.in
+++ b/package/iwd/Config.in
@@ -1,6 +1,6 @@
 config BR2_PACKAGE_IWD
 	bool "iwd"
-	depends on BR2_USE_MMU # dbus
+	depends on BR2_USE_MMU # dbus, ell
 	depends on BR2_TOOLCHAIN_HAS_THREADS # dbus
 	depends on BR2_TOOLCHAIN_HAS_SYNC_4 # ell
 	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12 # ell
diff --git a/package/ofono/Config.in b/package/ofono/Config.in
index c1d0cae4ef..c6a45625d9 100644
--- a/package/ofono/Config.in
+++ b/package/ofono/Config.in
@@ -2,7 +2,7 @@ config BR2_PACKAGE_OFONO
 	bool "ofono"
 	depends on BR2_USE_WCHAR # gettext, libglib2, ell
 	depends on BR2_TOOLCHAIN_HAS_THREADS # dbus, libglib2
-	depends on BR2_USE_MMU # dbus, libglib2
+	depends on BR2_USE_MMU # dbus, ell, libglib2
 	depends on !BR2_STATIC_LIBS # dlopen(), ell
 	depends on BR2_TOOLCHAIN_HAS_SYNC_4
 	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12 # ell