diff --git a/finddeps.sh b/finddeps.sh
index 7b3f986..0b3e0a8 100755
--- a/finddeps.sh
+++ b/finddeps.sh
@@ -8,4 +8,4 @@ search() {
   for i in $deps; do search $i; done
 }
 
-search "$1"|grep -v "$1"|sed 's|\.c$|.o|'
+search "$1"|sort -u|grep -v "$1"|sed 's|\.c$|.o|'