diff --git a/package/network/services/dropbear/Makefile b/package/network/services/dropbear/Makefile
index 561546d9ce..d92b94915b 100644
--- a/package/network/services/dropbear/Makefile
+++ b/package/network/services/dropbear/Makefile
@@ -73,6 +73,7 @@ define Package/dropbearconvert
   SECTION:=utils
   CATEGORY:=Utilities
   TITLE:=Utility for converting SSH keys
+  DEPENDS:= +DROPBEAR_ZLIB:zlib
 endef
 
 CONFIGURE_ARGS += \