diff --git a/Tests/test_file_tiff_metadata.py b/Tests/test_file_tiff_metadata.py
index 035a4fcc1..edfeeb465 100644
--- a/Tests/test_file_tiff_metadata.py
+++ b/Tests/test_file_tiff_metadata.py
@@ -253,7 +253,7 @@ class TestFileTiffMetadata(PillowTestCase):
 
         # pair of 4 byte signed longs
         numerator = 2 ** 31 - 1
-        denominator = -2 ** 31
+        denominator = -(2 ** 31)
 
         info[37380] = TiffImagePlugin.IFDRational(numerator, denominator)
 
@@ -265,7 +265,7 @@ class TestFileTiffMetadata(PillowTestCase):
         self.assertEqual(denominator, reloaded.tag_v2[37380].denominator)
 
         # pair of 4 byte signed longs
-        numerator = -2 ** 31
+        numerator = -(2 ** 31)
         denominator = 2 ** 31 - 1
 
         info[37380] = TiffImagePlugin.IFDRational(numerator, denominator)
diff --git a/src/PIL/TiffImagePlugin.py b/src/PIL/TiffImagePlugin.py
index f8993310e..e6a5fc63a 100644
--- a/src/PIL/TiffImagePlugin.py
+++ b/src/PIL/TiffImagePlugin.py
@@ -544,7 +544,7 @@ class ImageFileDirectory_v2(MutableMapping):
                 elif all(isinstance(v, int) for v in values):
                     if all(0 <= v < 2 ** 16 for v in values):
                         self.tagtype[tag] = TiffTags.SHORT
-                    elif all(-2 ** 15 < v < 2 ** 15 for v in values):
+                    elif all(-(2 ** 15) < v < 2 ** 15 for v in values):
                         self.tagtype[tag] = TiffTags.SIGNED_SHORT
                     else:
                         self.tagtype[tag] = (
@@ -715,7 +715,7 @@ class ImageFileDirectory_v2(MutableMapping):
     @_register_writer(10)
     def write_signed_rational(self, *values):
         return b"".join(
-            self._pack("2l", *_limit_signed_rational(frac, 2 ** 31 - 1, -2 ** 31))
+            self._pack("2l", *_limit_signed_rational(frac, 2 ** 31 - 1, -(2 ** 31)))
             for frac in values
         )