diff --git a/plugins/org.eclipse.mat.api/src/org/eclipse/mat/internal/Messages.java b/plugins/org.eclipse.mat.api/src/org/eclipse/mat/internal/Messages.java
index 235241562..6261c0fca 100644
--- a/plugins/org.eclipse.mat.api/src/org/eclipse/mat/internal/Messages.java
+++ b/plugins/org.eclipse.mat.api/src/org/eclipse/mat/internal/Messages.java
@@ -598,12 +598,11 @@ public class Messages extends NLS
 
     public static String ThreadStackQuery_Column_ObjectStackFrame;
     public static String ThreadStackQuery_Label_Local;
-    public static String ThreadStackQuery_Label_Local_Blocked_On;
-
     public static String ThreadStackQuery_Label_Local_Busy_Monitor;
-    public static String ThreadStackQuery_Label_Local_Probable_Busy_Monitor;
-
+    public static String ThreadStackQuery_Label_Local_Possible_Busy_Monitor;
+    public static String ThreadStackQuery_Label_Local_Possibly_Blocked_On;
     public static String ThreadStackQuery_Label_Local_Probably_Blocked_On;
+
     public static String TopComponentsReportQuery_TopComponentReports;
 
     public static String TopConsumers2Query_BiggestClasses;
diff --git a/plugins/org.eclipse.mat.api/src/org/eclipse/mat/internal/messages.properties b/plugins/org.eclipse.mat.api/src/org/eclipse/mat/internal/messages.properties
index 0324a6893..1f39667eb 100644
--- a/plugins/org.eclipse.mat.api/src/org/eclipse/mat/internal/messages.properties
+++ b/plugins/org.eclipse.mat.api/src/org/eclipse/mat/internal/messages.properties
@@ -520,10 +520,10 @@ ThreadOverviewQuery_SearchingThreads=Searching Threads...
 ThreadOverviewQuery_ThreadDetails=Thread Details
 ThreadStackQuery_Column_ObjectStackFrame=Object / Stack Frame
 ThreadStackQuery_Label_Local=<local>
-ThreadStackQuery_Label_Local_Blocked_On=<local, blocked on>
 ThreadStackQuery_Label_Local_Probably_Blocked_On=<local, probably blocked on>
+ThreadStackQuery_Label_Local_Possibly_Blocked_On=<local, possibly blocked on>
 ThreadStackQuery_Label_Local_Busy_Monitor=<local, busy monitor>
-ThreadStackQuery_Label_Local_Probable_Busy_Monitor=<local, probable busy monitor>
+ThreadStackQuery_Label_Local_Possible_Busy_Monitor=<local, possible busy monitor>
 TopComponentsReportQuery_TopComponentReports=Top Component Reports
 TopConsumers2Query_BiggestClasses=Biggest Top-Level Dominator Classes
 TopConsumers2Query_BiggestClassesOverview=Biggest Top-Level Dominator Classes (Overview)