diff --git a/package/espeak/Config.in b/package/espeak/Config.in
index ec81893ff8..4fd78456f2 100644
--- a/package/espeak/Config.in
+++ b/package/espeak/Config.in
@@ -1,11 +1,13 @@
 comment "espeak needs a toolchain w/ C++, wchar, threads"
 	depends on !BR2_TOOLCHAIN_HAS_THREADS || !BR2_INSTALL_LIBSTDCPP || !BR2_USE_WCHAR
+	depends on BR2_USE_MMU
 
 config BR2_PACKAGE_ESPEAK
 	bool "espeak"
 	depends on BR2_INSTALL_LIBSTDCPP
 	depends on BR2_USE_WCHAR
 	depends on BR2_TOOLCHAIN_HAS_THREADS
+	depends on BR2_USE_MMU # fork()
 	help
 	  espeak is a speech synthesizer software for English and
 	  other languages.
@@ -26,14 +28,14 @@ config BR2_PACKAGE_ESPEAK_AUDIO_BACKEND_ALSA
 	select BR2_PACKAGE_PORTAUDIO
 	select BR2_PACKAGE_PORTAUDIO_CXX
 
-comment "pulseaudio backend needs a toolchain with largefile"
-	depends on !BR2_LARGEFILE
-
 config BR2_PACKAGE_ESPEAK_AUDIO_BACKEND_PULSEAUDIO
 	bool "pulseaudio"
 	select BR2_PACKAGE_PULSEAUDIO
 	depends on BR2_LARGEFILE # pulseaudio
 
+comment "pulseaudio backend needs a toolchain with largefile"
+	depends on !BR2_LARGEFILE
+
 endchoice
 
 endif # BR2_PACKAGE_ESPEAK