diff --git a/release/Makefile b/release/Makefile
index 390b80824323..d7fc432f794a 100644
--- a/release/Makefile
+++ b/release/Makefile
@@ -94,6 +94,11 @@ IMAGES+=	mini-memstick.img
 .endif
 
 CLEANFILES=	packagesystem *.txz MANIFEST system ${IMAGES}
+.if defined(WITH_COMPRESSED_IMAGES) && !empty(WITH_COMPRESSED_IMAGES)
+. for I in ${IMAGES}
+CLEANFILES+=	${I}.gz
+. endfor
+.endif
 CLEANDIRS=	dist ftp release bootonly dvd
 beforeclean:
 	chflags -R noschg .