diff --git a/abuild.in b/abuild.in
index 5457b0d..9e6f43a 100644
--- a/abuild.in
+++ b/abuild.in
@@ -1069,7 +1069,7 @@ trace_apk_deps() {
 			>> "$dir"/.PKGINFO
 	fi
 	if [ -f "$dir"/.provides-pc ]; then
-		sed 's/^/provides = pc:/' "$dir"/.provides-pc \
+		sed 's/^/provides = pc:/' "$dir"/.provides-pc | sort -u \
 			>> "$dir"/.PKGINFO
 	fi
 	[ -z "$autodeps" ] && return 0