diff --git a/package/ccache/Config.in b/package/ccache/Config.in
index 4a37973623..30e6578700 100644
--- a/package/ccache/Config.in
+++ b/package/ccache/Config.in
@@ -1,5 +1,7 @@
 config BR2_PACKAGE_CCACHE
 	bool "ccache"
+	# needs fork()
+	depends on BR2_USE_MMU
 	help
 	  ccache is a compiler cache. It speeds up recompilation by
 	  caching previous compilations and detecting when the same