diff --git a/STER/STER.sql b/STER/STER.sql
index 7f484ecd5..d0825a434 100644
--- a/STER/STER.sql
+++ b/STER/STER.sql
@@ -156,7 +156,7 @@ BEGIN
                             SELECT p.prs_perslid_key
                               INTO v_perslid_key
                               FROM prs_perslid p
-						     WHERE     p.prs_perslid_email=rec.prs_perslid_email 
+						     WHERE     UPPER(p.prs_perslid_email)=UPPER(rec.prs_perslid_email)
 						           AND p.prs_perslid_verwijder IS NULL;
                         EXCEPTION
                         WHEN NO_DATA_FOUND THEN
@@ -226,7 +226,7 @@ BEGIN
                                     SELECT p.prs_perslid_key 
                                         INTO v_budgethouder_key 
                                         FROM prs_perslid p 
-                                     where       p.prs_perslid_email=rec.budgethouder_email  
+                                     where       UPPER(p.prs_perslid_email)=UPPER(rec.budgethouder_email)  
                                              AND p.prs_perslid_verwijder IS NULL 
                                              AND p.prs_perslid_inactief IS NULL OR TRUNC(p.prs_perslid_inactief) > TRUNC(SYSDATE);
                                 EXCEPTION