diff --git a/Lib/gzip.py b/Lib/gzip.py
index ddc7bda1fecbbd..6db74f87109a14 100644
--- a/Lib/gzip.py
+++ b/Lib/gzip.py
@@ -278,7 +278,7 @@ def read(self, size=-1):
     def read1(self, size=-1):
         """Implements BufferedIOBase.read1()
 
-        Reads up to a buffer's worth of data is size is negative."""
+        Reads up to a buffer's worth of data if size is negative."""
         self._check_not_closed()
         if self.mode != READ:
             import errno