diff --git a/tufte-book.cls b/tufte-book.cls
index d929fa4..dc910c5 100644
--- a/tufte-book.cls
+++ b/tufte-book.cls
@@ -75,7 +75,7 @@
 % If there is a `tufte-book-local.sty' file, load it.
 
 \IfFileExists{tufte-book-local.tex}
-  {\input{tufte-book-local.tex}}
+  {\input{tufte-book-local}}
   {}
 
 %%
diff --git a/tufte-common.sty b/tufte-common.sty
index f7468f6..179eb53 100644
--- a/tufte-common.sty
+++ b/tufte-common.sty
@@ -73,7 +73,7 @@
 \newboolean{@tufte@symmetric}
 \DeclareOption{symmetric}{
   \setboolean{@tufte@symmetric}{true}
-  \PackageInfo{\@tufte@pkgname}{The `symmetric' option implies `twoside'.}
+  \PackageInfo{\@tufte@pkgname}{The `symmetric' option implies `twoside'}
   %\ExecuteOptions{twoside}
 }
 
@@ -823,10 +823,10 @@
 
 
 %%
-% If there is a `tufte-common-local.sty' file, load it up.
+% If there is a `tufte-common-local.tex' file, load it up.
 
-\IfFileExists{tufte-common-local.sty}
-  {\RequirePackage{tufte-common-local.sty}}
+\IfFileExists{tufte-common-local.tex}
+  {\input{tufte-common-local}}
   {}
 
 
diff --git a/tufte-handout.cls b/tufte-handout.cls
index cd7f834..3a53707 100644
--- a/tufte-handout.cls
+++ b/tufte-handout.cls
@@ -44,10 +44,10 @@
 
 
 %%
-% If there is a `tufte-handout-local.sty' file, load it.
+% If there is a `tufte-handout-local.tex' file, load it.
 
 \IfFileExists{tufte-handout-local.tex}
-  {\input{tufte-handout-local.tex}}
+  {\input{tufte-handout-local}}
   {}