diff --git a/docs/soar_manual/02_TheSoarArchitecture.md b/docs/soar_manual/02_TheSoarArchitecture.md
index 81a80238..e8fdff4b 100644
--- a/docs/soar_manual/02_TheSoarArchitecture.md
+++ b/docs/soar_manual/02_TheSoarArchitecture.md
@@ -329,7 +329,7 @@ blocks.
 ///
 
 Soar solves a problem in this problem space, it does not explicitly generate all
-of the states, examine them, and then create a path. Instead, Soar isin a
+of the states, examine them, and then create a path. Instead, Soar is in a
 specific state at a given time (represented in working memory), attempting to
 select an operator that will move it to a new state. It uses whatever knowledge
 it has about selecting operators given the current situation, and if its