diff --git a/src/main/org/apache/tools/ant/types/resources/BaseResourceCollectionContainer.java b/src/main/org/apache/tools/ant/types/resources/BaseResourceCollectionContainer.java
index 2a7685e45..68e2e7f91 100644
--- a/src/main/org/apache/tools/ant/types/resources/BaseResourceCollectionContainer.java
+++ b/src/main/org/apache/tools/ant/types/resources/BaseResourceCollectionContainer.java
@@ -82,6 +82,12 @@ public abstract class BaseResourceCollectionContainer
         if (c == null) {
             return;
         }
+        if (Project.getProject(c) == null) {
+            Project p = getProject();
+            if (p != null) {
+                p.setProjectReference(c);
+            }
+        }
         rc.add(c);
         FailFast.invalidate(this);
         coll = null;
diff --git a/src/main/org/apache/tools/ant/types/resources/BaseResourceCollectionWrapper.java b/src/main/org/apache/tools/ant/types/resources/BaseResourceCollectionWrapper.java
index d18c19669..2cf14ccf3 100644
--- a/src/main/org/apache/tools/ant/types/resources/BaseResourceCollectionWrapper.java
+++ b/src/main/org/apache/tools/ant/types/resources/BaseResourceCollectionWrapper.java
@@ -73,6 +73,12 @@ public abstract class BaseResourceCollectionWrapper
             throw oneNested();
         }
         rc = c;
+        if (Project.getProject(rc) == null) {
+            Project p = getProject();
+            if (p != null) {
+                p.setProjectReference(rc);
+            }
+        }
         setChecked(false);
     }