diff --git a/src/main/java/dev/pcvolkmer/onco/datamapper/datacatalogues/AbstractDataCatalogue.java b/src/main/java/dev/pcvolkmer/onco/datamapper/datacatalogues/AbstractDataCatalogue.java
index 665e061..5f09688 100644
--- a/src/main/java/dev/pcvolkmer/onco/datamapper/datacatalogues/AbstractDataCatalogue.java
+++ b/src/main/java/dev/pcvolkmer/onco/datamapper/datacatalogues/AbstractDataCatalogue.java
@@ -31,7 +31,7 @@ public abstract class AbstractDataCatalogue implements DataCatalogue {
     public ResultSet getById(int id) {
         var result = this.jdbcTemplate.query(
                 String.format(
-                        "SELECT * FROM %s JOIN prozedur ON (prozedur.id = %s.id) WHERE geloescht = 0 AND id = ?",
+                        "SELECT * FROM %s JOIN prozedur ON (prozedur.id = %s.id) WHERE geloescht = 0 AND prozedur.id = ?",
                         getTableName(),
                         getTableName()
                 ),