diff --git a/ANNOUNCE b/ANNOUNCE
index a8fd787d2..e008f336e 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -91,7 +91,7 @@ Version 1.5.5beta08 [September 10, 2011]
   Fixed 64-bit compilation errors (gcc). The errors fixed relate
     to conditions where types that are 32 bits in the GCC 32-bit
     world (uLong and png_size_t) become 64 bits in the 64-bit
-    world.  This produces potential truncation errors which the
+    world.  This produces potential truncation errors that the
     compiler correctly flags.
   Relocated new HAVE_SOLARIS_LD definition in configure.ac
   Constant changes for 64-bit compatibility (removal of L suffixes). The
diff --git a/CHANGES b/CHANGES
index 227840570..a51a11a48 100644
--- a/CHANGES
+++ b/CHANGES
@@ -3575,7 +3575,7 @@ Version 1.5.5beta08 [September 10, 2011]
   Fixed 64-bit compilation errors (gcc). The errors fixed relate
     to conditions where types that are 32 bits in the GCC 32-bit
     world (uLong and png_size_t) become 64 bits in the 64-bit
-    world.  This produces potential truncation errors which the
+    world.  This produces potential truncation errors that the
     compiler correctly flags.
   Relocated new HAVE_SOLARIS_LD definition in configure.ac
   Constant changes for 64-bit compatibility (removal of L suffixes). The