diff --git a/README.md b/README.md
index c55606a..c98bbe9 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ Please use the following commands to define index entries and bold index entries
 ```tex
 \define{term}
 \definebf{term}
-\defineabrv{term}{abreviation}
+\defineabrv{term}{abbreviation}
 ```
 When using the default index command, for example when adding hierarchic entries, make sure all terms are capitalized. Like this: 
 ```tex