diff --git a/bob/io/base/__init__.py b/bob/io/base/__init__.py
index 7152f6c8f6c868183cf22652063c5509e570320d..0e7a19fb260fb634c0af83ddf3850582a0a50bf7 100644
--- a/bob/io/base/__init__.py
+++ b/bob/io/base/__init__.py
@@ -18,6 +18,7 @@ ImageFile.LOAD_TRUNCATED_IMAGES = True
 hdf5_extensions = [".hdf5", ".h5", ".hdf", ".hdf5", ".h5", ".hdf", ".hdf5"]
 image_extensions = [
     ".jpg",
+    ".JPG",
     ".jpeg",
     ".png",
     ".bmp",