diff --git a/src/build/project.jam b/src/build/project.jam
index 53c32d027..30f4f32b3 100644
--- a/src/build/project.jam
+++ b/src/build/project.jam
@@ -1067,7 +1067,7 @@ module project-rules
     
     rule option ( name : value )
     {
-        if $(__name__) != site-config && $(__name__) != user-config
+        if $(__name__) != site-config && $(__name__) != user-config && $(__name__) != project-config
         {
             import errors ;
             errors.error "The 'option' rule may be used only in site-config or user-config" ;