diff --git a/package/alsamixergui/Config.in b/package/alsamixergui/Config.in
index acc3cc9fc7..b1b9eb9c66 100644
--- a/package/alsamixergui/Config.in
+++ b/package/alsamixergui/Config.in
@@ -1,6 +1,7 @@
 config BR2_PACKAGE_ALSAMIXERGUI
 	depends on BR2_PACKAGE_XORG7
 	depends on BR2_INSTALL_LIBSTDCPP
+	depends on BR2_USE_MMU # fltk fork()
 	select BR2_PACKAGE_FLTK
 	select BR2_PACKAGE_ALSA_LIB
 	select BR2_PACKAGE_ALSA_LIB_PCM