diff --git a/src/main/java/info/bukova/isspst/services/workgroups/WorkgroupServiceImpl.java b/src/main/java/info/bukova/isspst/services/workgroups/WorkgroupServiceImpl.java
index faf8c8ee..90b87a9d 100644
--- a/src/main/java/info/bukova/isspst/services/workgroups/WorkgroupServiceImpl.java
+++ b/src/main/java/info/bukova/isspst/services/workgroups/WorkgroupServiceImpl.java
@@ -34,11 +34,7 @@ public class WorkgroupServiceImpl extends AbstractOwnedService<Workgroup> implem
 		if (!checkGroups(workgroup, member)) {
 			throw new WorkgroupException(WorkgroupException.CYCLIC_MEMBER);
 		}
-		
-		if (!member.isPerson() && !checkGroups((Workgroup)member, workgroup)) {
-			throw new WorkgroupException(WorkgroupException.CYCLIC_MEMBER);
-		}
-		
+			
 		JobMapping mapping = new JobMapping(member, role);
 		if (!workgroup.getMembers().contains(mapping)) {
 			workgroup.getMembers().add(mapping);
@@ -86,6 +82,7 @@ public class WorkgroupServiceImpl extends AbstractOwnedService<Workgroup> implem
 		return false;
 	}
 	
+	// check, jestli nahodou nekdo z komise neni clemen strediska, do nehoz se komise pridava
 	private boolean checkGroups(Workgroup workgroup, Member member) {
 		if (member.equals(workgroup)) {
 			return false;
@@ -94,12 +91,15 @@ public class WorkgroupServiceImpl extends AbstractOwnedService<Workgroup> implem
 		if (member.isPerson()) {
 			return true;
 		}
-		
-		Workgroup toAdd = Workgroup.class.cast(member); 
+				
+		Workgroup toAdd = Workgroup.class.cast(member);
 		for (JobMapping jm : toAdd.getMembers()) {
-			if (!jm.getMember().isPerson() && !checkGroups(workgroup, jm.getMember())) {
-				return false;
+			for (JobMapping wJm : workgroup.getMembers()) {
+				if (jm.getMember().equals(wJm.getMember())) {
+					return false;
+				}
 			}
+			
 		}
 		
 		return true;