diff --git a/exifread/__init__.py b/exifread/__init__.py
index ad3d7b4..685cd0d 100644
--- a/exifread/__init__.py
+++ b/exifread/__init__.py
@@ -38,7 +38,7 @@ def _find_heic_tiff(fh: BinaryIO) -> tuple:
         offset = fh.tell()
         logger.debug(f'Found TIFF header in Exif, offset = {offset:0x}H')
     else:
-            raise InvalidExif("Exif pointer to zeros, but found {data} instead of a TIFF header.")
+        raise InvalidExif("Exif pointer to zeros, but found {data} instead of a TIFF header.")
 
     return offset, endian