diff --git a/package/microperl/Config.in b/package/microperl/Config.in
index 256e271a67..66bbedd776 100644
--- a/package/microperl/Config.in
+++ b/package/microperl/Config.in
@@ -1,5 +1,7 @@
 config BR2_PACKAGE_MICROPERL
 	bool "microperl"
+	# needs fork()
+	depends on BR2_USE_MMU
 	help
 	  Perl without operating-specific functions such as readdir.