diff --git a/sample-book.pdf b/sample-book.pdf
index fd0d19a..b4ab0d9 100644
Binary files a/sample-book.pdf and b/sample-book.pdf differ
diff --git a/sample-handout.pdf b/sample-handout.pdf
index 6762508..4488b85 100644
Binary files a/sample-handout.pdf and b/sample-handout.pdf differ
diff --git a/tufte-common.sty b/tufte-common.sty
index a989852..21a0e8c 100644
--- a/tufte-common.sty
+++ b/tufte-common.sty
@@ -218,9 +218,8 @@
 
 \RequirePackage[letterpaper,left=1in,top=1in,headsep=2\baselineskip,textwidth=26pc,marginparsep=2pc,marginparwidth=12pc,textheight=44\baselineskip,headheight=\baselineskip]{geometry}
 
-% FIXME adjust A4 geometry to match letter paper geometry (except for outside margins)
 \ifthenelse{\boolean{@tufte@afourpaper}}
-  {\geometry{a4paper,includemp,width=170mm,marginparsep=10mm,marginparwidth=50mm,headheight=\baselineskip}}
+  {\geometry{a4paper,left=24.8mm,top=27.4mm,headsep=2\baselineskip,textwidth=107mm,marginparsep=8.2mm,marginparwidth=49.4mm,textheight=49\baselineskip,headheight=\baselineskip}}
   {}
 
 \ifthenelse{\boolean{@tufte@symmetric}}