diff --git a/README.txt b/README.txt
index ee9856e..0e7258d 100644
--- a/README.txt
+++ b/README.txt
@@ -68,7 +68,7 @@ which are made.
 Calculation objects contain instances of the AMEE::DataAbstraction::Term class.
 The Term class, and its subclasses Input, Drill, Profile, Metadatum, Usage, and
 Output, represent components of a calculation such as inputs, outputs (i.e.
-caluclated values) and arbitrary metadatum.
+calculated values) and arbitrary metadatum.
 
 Prototype calculations can be contained within an instance of the class
 AMEE::DataAbstraction::CalculationSet, in order to provide rapid access to any