diff --git a/tests/decode_images.rs b/tests/decode_images.rs
index 9fc8676..09685e3 100644
--- a/tests/decode_images.rs
+++ b/tests/decode_images.rs
@@ -149,6 +149,12 @@ fn test_decode_data() {
     }
 }
 
+#[test]
+fn issue_69() {
+    test_image_sum_u16("issue_69_lzw.tiff", ColorType::Gray(16), 1015486);
+    test_image_sum_u16("issue_69_packbits.tiff", ColorType::Gray(16), 1015486);
+}
+
 // TODO: GrayA support
 //#[test]
 //fn test_gray_alpha_u8()
diff --git a/tests/images/issue_69_lzw.tiff b/tests/images/issue_69_lzw.tiff
new file mode 100644
index 0000000..3870fc6
Binary files /dev/null and b/tests/images/issue_69_lzw.tiff differ
diff --git a/tests/images/issue_69_packbits.tiff b/tests/images/issue_69_packbits.tiff
new file mode 100644
index 0000000..224edc0
Binary files /dev/null and b/tests/images/issue_69_packbits.tiff differ