diff --git a/src/main/java/snippets/Snippets.java b/src/main/java/snippets/Snippets.java
index 7140982..c392888 100644
--- a/src/main/java/snippets/Snippets.java
+++ b/src/main/java/snippets/Snippets.java
@@ -35,6 +35,7 @@
 import java.util.stream.Collectors;
 import java.util.stream.IntStream;
 import java.util.stream.Stream;
+import java.util.LinkedHashMap;
 
 public abstract class Snippets {
 
@@ -305,7 +306,14 @@ public static Object[] flattenDepth(Object[] elements, int depth) {
      * @return grouped elements in a Map
      */
     public static <T, R> Map<R, List<T>> groupBy(T[] elements, Function<T, R> func) {
-        return Arrays.stream(elements).collect(Collectors.groupingBy(func));
+        return Arrays.stream(elements).collect(
+		Collectors.groupingBy(
+			func,
+			LinkedHashMap::new,
+			Collectors.toList()
+		)
+	);
+
     }
 
     /**
@@ -757,4 +765,4 @@ public static <E extends Enum<E>> Map<String, E> getEnumMap(final Class<E> enumC
         return Arrays.stream(enumClass.getEnumConstants())
                 .collect(Collectors.toMap(Enum::name, Function.identity()));
     }
-}
\ No newline at end of file
+}