diff --git a/api-openbis-java/source/java/ch/ethz/sis/openbis/generic/OpenBIS.java b/api-openbis-java/source/java/ch/ethz/sis/openbis/generic/OpenBIS.java
index c8ff840f21663a20a18912ddd341c1d2a66ed493..b5de0ef9a291da00c92c8d94d1ce56e57bd3cf43 100644
--- a/api-openbis-java/source/java/ch/ethz/sis/openbis/generic/OpenBIS.java
+++ b/api-openbis-java/source/java/ch/ethz/sis/openbis/generic/OpenBIS.java
@@ -529,7 +529,7 @@ public class OpenBIS {
         return asFacade.getRights(sessionToken, ids, fetchOptions);
     }
 
-    public Map<ISpaceId, Space> getSpaces(String sessionToken, List<? extends ISpaceId> spaceIds, SpaceFetchOptions fetchOptions) {
+    public Map<ISpaceId, Space> getSpaces(List<? extends ISpaceId> spaceIds, SpaceFetchOptions fetchOptions) {
         return asFacade.getSpaces(sessionToken, spaceIds, fetchOptions);
     }