diff --git a/src/picam/picam1.py b/src/picam/picam1.py
index e7d8f0a..f2182ba 100644
--- a/src/picam/picam1.py
+++ b/src/picam/picam1.py
@@ -34,9 +34,9 @@ class PiCam1(PiCam):
         self.camera.close()
         self.camera = None
 
-    def capture(self, preview: bool = False) -> bytes:
+    def capture(self, preview: bool = False) -> bytearray:
         # Bytes to hold output buffer
-        out = bytes()
+        out = bytearray()
         bytes_stream = BytesIO()
 
         if not preview: