diff --git a/macros.tex b/macros.tex
index 07a8c6f..abcbe3e 100644
--- a/macros.tex
+++ b/macros.tex
@@ -160,6 +160,7 @@
 \newtheorem{Corollary}{Corollary}
 \newtheorem{Example}{Example}
 \newtheorem{Axiom}{Axiom}
+\newtheorem{Assumption}{Assumption}
 
 
 \newcommand{\proofpara}[1]{\medskip\noindent\underline{{#1}:}}