diff --git a/src-modules/module/costage/schluesseltabellen/trans_costage_st_studiengaenge.sql b/src-modules/module/costage/schluesseltabellen/trans_costage_st_studiengaenge.sql
index 4d3206a..a5ec51f 100644
--- a/src-modules/module/costage/schluesseltabellen/trans_costage_st_studiengaenge.sql
+++ b/src-modules/module/costage/schluesseltabellen/trans_costage_st_studiengaenge.sql
@@ -43,8 +43,8 @@ where A.st_absz_nr=costage_st_studiengaenge.st_absz_nr;
 --pversion/rsz
 update costage_st_studiengaenge set pversion=P.po_stp_stp_version_kb,
 rsz=P.po_regelstudienzeit
-from costage_st_studien_spoversionen P
-where P.stp_stp_nr=costage_st_studiengaenge.stp_stp_nr;
-
-
+from costage_st_studien_spoversionen P, costage_st_studien S
+where S.st_studium_nr = P.st_studium_nr
+and S.st_studiengang_nr=costage_st_studiengaenge.st_studiengang_nr
+and P.stp_stp_nr=costage_st_studiengaenge.stp_stp_nr;