diff --git a/.ci/test.sh b/.ci/test.sh
index 516581ff0..579372a62 100755
--- a/.ci/test.sh
+++ b/.ci/test.sh
@@ -2,7 +2,7 @@
 
 set -e
 
-python -m pytest -v -x -W always --cov PIL --cov Tests --cov-report term Tests
+python -bb -m pytest -v -x -W always --cov PIL --cov Tests --cov-report term Tests
 
 # Docs
 if [ "$TRAVIS_PYTHON_VERSION" == "3.8" ] && [ "$TRAVIS_CPU_ARCH" == "amd64" ]; then
diff --git a/src/PIL/TiffImagePlugin.py b/src/PIL/TiffImagePlugin.py
index dfabed6ce..ac309c560 100644
--- a/src/PIL/TiffImagePlugin.py
+++ b/src/PIL/TiffImagePlugin.py
@@ -805,7 +805,7 @@ class ImageFileDirectory_v2(MutableMapping):
             if tag == STRIPOFFSETS:
                 stripoffsets = len(entries)
             typ = self.tagtype.get(tag)
-            logger.debug(f"Tag {tag}, Type: {typ}, Value: {value}")
+            logger.debug(f"Tag {tag}, Type: {typ}, Value: {repr(value)}")
             is_ifd = typ == TiffTags.LONG and isinstance(value, dict)
             if is_ifd:
                 if self._endian == "<":