diff --git a/src/kernel/errors.jam b/src/kernel/errors.jam
index 8ebabfd9e..e59c00ddf 100644
--- a/src/kernel/errors.jam
+++ b/src/kernel/errors.jam
@@ -25,7 +25,7 @@ rule backtrace ( skip-frames prefix messages * : * )
         local bt = [ nearest-user-location ] ;
         if $(bt)
         {
-            ECHO "$(prefix) at $(bt) " ;
+            ECHO $(prefix) at $(bt) ;
         }
         for local n in $(args)
         {