diff --git a/package/alsa-lib/Config.in b/package/alsa-lib/Config.in
index 447916a29f..6df03afe0e 100644
--- a/package/alsa-lib/Config.in
+++ b/package/alsa-lib/Config.in
@@ -69,6 +69,7 @@ config BR2_PACKAGE_ALSA_LIB_SEQ
 config BR2_PACKAGE_ALSA_LIB_UCM
 	bool "ucm"
 	default y
+	depends on BR2_USE_MMU # fork()
 	select BR2_PACKAGE_ALSA_LIB_MIXER
 
 config BR2_PACKAGE_ALSA_LIB_ALISP