diff --git a/tufte-common.def b/tufte-common.def
index 7dcbe8a..8457131 100644
--- a/tufte-common.def
+++ b/tufte-common.def
@@ -93,7 +93,7 @@
 
 \newboolean{@tufte@loadbidi}
 \DeclareOption{bidi}{\setboolean{@tufte@loadbidi}{true}}
-\DeclareOption{nobidi}{\setboolean{@tufte@loadbibi}{false}}
+\DeclareOption{nobidi}{\setboolean{@tufte@loadbidi}{false}}
 
 %%
 % `nohyper' option -- suppresses loading of the hyperref package