unsupported file format exception

2 files changed, 3 insertions, 1 deletions

diff --git a/bsie/reader/image/_pillow.py b/bsie/reader/image/_pillow.py
index ee0662d..3144509 100644
--- a/bsie/reader/image/_pillow.py
+++ b/bsie/reader/image/_pillow.py
@@ -31,6 +31,8 @@ class PillowImage(base.Reader):
         try:
             # open file with PIL
             return PIL.Image.open(path)
+        except PIL.UnidentifiedImageError as err:
+            raise errors.UnsupportedFileFormatError(path) from err
         except IOError as err:
             raise errors.ReaderError(path) from err
 
diff --git a/bsie/reader/image/_raw.py b/bsie/reader/image/_raw.py
index 77be357..cd60453 100644
--- a/bsie/reader/image/_raw.py
+++ b/bsie/reader/image/_raw.py
@@ -45,7 +45,7 @@ class RawImage(base.Reader):
     def __call__(self, path: str) -> PIL.Image:
         # perform quick checks first
         if not self._match(path):
-            raise errors.ReaderError(path)
+            raise errors.UnsupportedFileFormatError(path)
 
         try:
             # open file with rawpy