diff --git a/SmallObj.h b/SmallObj.h
index 1e6021e..4a90c33 100644
--- a/SmallObj.h
+++ b/SmallObj.h
@@ -8,7 +8,7 @@
 //     purpose is hereby granted without fee, provided that the above copyright 
 //     notice appear in all copies and that both that copyright notice and this 
 //     permission notice appear in supporting documentation.
-// The author or Addison-Welsey Longman make no representations about the 
+// The author or Addison-Wesley Longman make no representations about the 
 //     suitability of this software for any purpose. It is provided "as is" 
 //     without express or implied warranty.
 ////////////////////////////////////////////////////////////////////////////////
diff --git a/Tuple.h b/Tuple.h
index df83859..47fc19e 100644
--- a/Tuple.h
+++ b/Tuple.h
@@ -8,7 +8,7 @@
 //     purpose is hereby granted without fee, provided that the above copyright 
 //     notice appear in all copies and that both that copyright notice and this 
 //     permission notice appear in supporting documentation.
-// The author or Addison-Welsey Longman make no representations about the 
+// The author or Addison-Wesley Longman make no representations about the 
 //     suitability of this software for any purpose. It is provided "as is" 
 //     without express or implied warranty.
 ////////////////////////////////////////////////////////////////////////////////
diff --git a/TypeInfo.h b/TypeInfo.h
index e04bc29..f9ed1a5 100644
--- a/TypeInfo.h
+++ b/TypeInfo.h
@@ -8,7 +8,7 @@
 //     purpose is hereby granted without fee, provided that the above copyright 
 //     notice appear in all copies and that both that copyright notice and this 
 //     permission notice appear in supporting documentation.
-// The author or Addison-Welsey Longman make no representations about the 
+// The author or Addison-Wesley Longman make no representations about the 
 //     suitability of this software for any purpose. It is provided "as is" 
 //     without express or implied warranty.
 ////////////////////////////////////////////////////////////////////////////////
diff --git a/static_check.h b/static_check.h
index 42662d0..b8a07b0 100644
--- a/static_check.h
+++ b/static_check.h
@@ -8,7 +8,7 @@
 //     purpose is hereby granted without fee, provided that the above copyright 
 //     notice appear in all copies and that both that copyright notice and this 
 //     permission notice appear in supporting documentation.
-// The author or Addison-Welsey Longman make no representations about the 
+// The author or Addison-Wesley Longman make no representations about the 
 //     suitability of this software for any purpose. It is provided "as is" 
 //     without express or implied warranty.
 ////////////////////////////////////////////////////////////////////////////////