diff --git a/src/main/java/spoon/support/modelobs/ChangeCollector.java b/src/main/java/spoon/support/modelobs/ChangeCollector.java
index 52efdccbfc6..1d957feb8b3 100644
--- a/src/main/java/spoon/support/modelobs/ChangeCollector.java
+++ b/src/main/java/spoon/support/modelobs/ChangeCollector.java
@@ -138,6 +138,9 @@ public void exit(CtElement element) {
 	}
 
 	private static class Scanner extends EarlyTerminatingScanner<Void> {
+		Scanner() {
+			setVisitCompilationUnitContent(true);
+		}
 		CtRole getScannedRole() {
 			return scannedRole;
 		}