diff --git a/src/main/java/dev/zarr/zarrjava/store/MemoryStore.java b/src/main/java/dev/zarr/zarrjava/store/MemoryStore.java
index c1664e1..7857345 100644
--- a/src/main/java/dev/zarr/zarrjava/store/MemoryStore.java
+++ b/src/main/java/dev/zarr/zarrjava/store/MemoryStore.java
@@ -1,5 +1,7 @@
 package dev.zarr.zarrjava.store;
 
+import dev.zarr.zarrjava.utils.Utils;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 import java.io.InputStream;
@@ -55,7 +57,7 @@ public ByteBuffer get(String[] keys, long start, long end) {
 
     @Override
     public void set(String[] keys, ByteBuffer bytes) {
-        map.put(resolveKeys(keys), bytes.array());
+        map.put(resolveKeys(keys), Utils.toArray(bytes));
     }
 
     @Override
diff --git a/src/main/java/dev/zarr/zarrjava/store/ZipStore.java b/src/main/java/dev/zarr/zarrjava/store/ZipStore.java
index 603d8e3..cfcb3bd 100644
--- a/src/main/java/dev/zarr/zarrjava/store/ZipStore.java
+++ b/src/main/java/dev/zarr/zarrjava/store/ZipStore.java
@@ -1,5 +1,7 @@
 package dev.zarr.zarrjava.store;
 
+import dev.zarr.zarrjava.utils.Utils;
+
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 import java.io.IOException;
@@ -62,13 +64,7 @@ public String getArchiveComment() throws IOException {
                 return null;
             }
 
-            byte[] bufArray;
-            if (buffer.hasArray()) {
-                bufArray = buffer.array();
-            } else {
-                bufArray = new byte[buffer.remaining()];
-                buffer.duplicate().get(bufArray);
-            }
+            byte[] bufArray = Utils.toArray(buffer);
 
             String comment = getZipCommentFromBuffer(bufArray);
             if (comment != null) {