diff --git a/releng.control/cc_config.xml b/releng.control/cc_config.xml
index 90acd254557b4fd3638e1b03b990e510421239d3..2c95f78a2b4d6b90dffbbd69bad9e6778e52b8ab 100644
--- a/releng.control/cc_config.xml
+++ b/releng.control/cc_config.xml
@@ -367,6 +367,7 @@
     </project>
     <project
         forceOnly="true"
+        forceBuildNewProject="false"
         requireModification="true"
         name="patches-R1.5.5-P">
         <modificationset>
@@ -408,6 +409,7 @@
 
     <project
         forceOnly="true"
+        forceBuildNewProject="false"
         requireModification="true"
         name="patches-R3.0.4-P">
         <modificationset>