diff --git a/utils/pciutils/Makefile b/utils/pciutils/Makefile
index cac5fb6d5..fdf772f94 100644
--- a/utils/pciutils/Makefile
+++ b/utils/pciutils/Makefile
@@ -34,7 +34,7 @@ endef
 
 define Package/pciutils/postinst
 #!/bin/sh
-(cd $${PKG_ROOT}/usr/share; $${PKG_ROOT}/usr/sbin/update-pciids)
+(cd $${PKG_ROOT}/usr/share; $${PKG_ROOT}/usr/sbin/update-pciids; rm pci.ids.gz.old)
 exit 0
 endef
 
diff --git a/utils/usbutils/Makefile b/utils/usbutils/Makefile
index 00946200a..033e5dec7 100644
--- a/utils/usbutils/Makefile
+++ b/utils/usbutils/Makefile
@@ -29,7 +29,7 @@ endef
 
 define Package/usbutils/postinst
 #!/bin/sh
-(cd $${IPKG_INSTROOT}/usr/share; $${PKG_ROOT}/usr/sbin/update-usbids.sh)
+(cd $${IPKG_INSTROOT}/usr/share; $${PKG_ROOT}/usr/sbin/update-usbids.sh ; rm usb.ids.gz.old)
 exit 0
 endef