diff --git a/package/dc3dd/Config.in b/package/dc3dd/Config.in
index bd181b7065..b4b7dfd691 100644
--- a/package/dc3dd/Config.in
+++ b/package/dc3dd/Config.in
@@ -1,5 +1,6 @@
 config BR2_PACKAGE_DC3DD
 	bool "dc3dd"
+	depends on BR2_USE_MMU # fork()
 	depends on !BR2_RISCV_32
 	depends on !BR2_arc
 	depends on BR2_TOOLCHAIN_HAS_THREADS
@@ -13,6 +14,7 @@ config BR2_PACKAGE_DC3DD
 	  https://sourceforge.net/projects/dc3dd/
 
 comment "dc3dd needs a glibc or uClibc toolchain w/ threads"
+	depends on BR2_USE_MMU
 	depends on !BR2_RISCV_32
 	depends on !BR2_arc
 	depends on !BR2_TOOLCHAIN_HAS_THREADS || \