diff --git a/ANNOUNCE b/ANNOUNCE
index a0f7a76a2..6d3f11d28 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -41,7 +41,7 @@ Version 1.5.7beta01 [November 4, 2011]
     changes the 'Paeth' reconstruction function to improve the GCC code
     generation on x86. The changes are only part of the suggested ones;
     just the changes that definitely improve speed and remain simple.
-    The changes also slightly increase the clarity of the code. In a
+    The changes also slightly increase the clarity of the code.
 
 Version 1.5.7beta02 [November 4, 2011]
 
diff --git a/CHANGES b/CHANGES
index eeaf3d74a..e8c79570b 100644
--- a/CHANGES
+++ b/CHANGES
@@ -3684,7 +3684,7 @@ Version 1.5.7beta01 [November 4, 2011]
     changes the 'Paeth' reconstruction function to improve the GCC code
     generation on x86. The changes are only part of the suggested ones;
     just the changes that definitely improve speed and remain simple.
-    The changes also slightly increase the clarity of the code. In a
+    The changes also slightly increase the clarity of the code.
 
 Version 1.5.7beta02 [November 4, 2011]