diff --git a/sql/path2.sql b/sql/path2.sql
index 93a91d0c7456c7c5490e01ed95da45feb616fa5c..2af560366f4fd5fd3570d813009b50ecb8c6fbc9 100644
--- a/sql/path2.sql
+++ b/sql/path2.sql
@@ -1,4 +1,4 @@
 
 WITH path2(a,b) AS (
-	SELECT p1.a, p2.b from par p1 JOIN par p2 ON p1.b = p2.a
+	SELECT DISTINCT p1.a, p2.b from par p1 JOIN par p2 ON p1.b = p2.a
 ) SELECT Count(*) FROM path2;