diff --git a/mathomatic/Makefile b/mathomatic/Makefile
index 37ffef1..b3a38dd 100644
--- a/mathomatic/Makefile
+++ b/mathomatic/Makefile
@@ -21,6 +21,7 @@ define Package/mathomatic
 	CATEGORY:=Utilities
 	TITLE:=Calc
 	URL:=http://www.panix.com/~gesslein/
+	DEPENDS:=+libreadline
 endef
 
 define Package/mathomatic/description