diff --git a/webapp/src/edu/cornell/mannlib/vitro/webapp/controller/freemarker/SimpleReasonerRecomputeController.java b/webapp/src/edu/cornell/mannlib/vitro/webapp/controller/freemarker/SimpleReasonerRecomputeController.java
index cec98d660..bba91f4ac 100644
--- a/webapp/src/edu/cornell/mannlib/vitro/webapp/controller/freemarker/SimpleReasonerRecomputeController.java
+++ b/webapp/src/edu/cornell/mannlib/vitro/webapp/controller/freemarker/SimpleReasonerRecomputeController.java
@@ -38,7 +38,7 @@ public class SimpleReasonerRecomputeController extends FreemarkerHttpServlet {
             if (!(simpleReasoner instanceof SimpleReasoner)) {
                 messageStr = "No SimpleReasoner has been set up.";
             } else if ( ((SimpleReasoner)simpleReasoner).isABoxReasoningAsynchronous() ) {
-                messageStr = "SimpleReasoner is currently in asynchronous mode so a recompute can not be started. Please try again later.";
+                messageStr = "SimpleReasoner is currently in asynchronous mode so a recompute cannot be started. Please try again later.";
             } else {
             	String signal = (String) vreq.getParameter("signal");