diff --git a/AlgebraicDataflowArchitectureModel/src/models/dataConstraintModel/DataConstraintModel.java b/AlgebraicDataflowArchitectureModel/src/models/dataConstraintModel/DataConstraintModel.java
index 2f99781..397a87b 100644
--- a/AlgebraicDataflowArchitectureModel/src/models/dataConstraintModel/DataConstraintModel.java
+++ b/AlgebraicDataflowArchitectureModel/src/models/dataConstraintModel/DataConstraintModel.java
@@ -42,7 +42,7 @@
 			return children[0]+".stream().filter(item -> item.getValue()==false).collect(Collectors.toList())";
 		}
 	});
-	public static final Symbol sortCard = new Symbol("sortCard", 1, Symbol.Type.PREFIX, new Symbol.IImplGenerator() {
+	public static final Symbol sortByKey = new Symbol("sortByKey", 1, Symbol.Type.PREFIX, new Symbol.IImplGenerator() {
 		@Override
 		public String generate(Type type, String[] children, String[] childrenSideEffects, String[] sideEffect) {			
 			String compType = "";
@@ -58,6 +58,9 @@
 				}
 			
 			}	
+			for (String s: childrenSideEffects) {
+				sideEffect[0] += s;
+			}
 			temp_sort=children[0]+".sort(Comparator.comparing("+compType+"::getKey));\n";
 			return temp_sort;
 		}
@@ -235,7 +238,7 @@
 		addSymbol(tail);
 		addSymbol(extractFaceDown);
 		addSymbol(length);
-		addSymbol(sortCard);
+		addSymbol(sortByKey);
 		addSymbol(contains);
 		addSymbol(get);
 		addSymbol(set);