diff --git a/proposal/sandbox/filterreaders/src/main/org/apache/tools/ant/filters/StripLineBreaks.java b/proposal/sandbox/filterreaders/src/main/org/apache/tools/ant/filters/StripLineBreaks.java
index 37b524941..ce71bac89 100644
--- a/proposal/sandbox/filterreaders/src/main/org/apache/tools/ant/filters/StripLineBreaks.java
+++ b/proposal/sandbox/filterreaders/src/main/org/apache/tools/ant/filters/StripLineBreaks.java
@@ -103,5 +103,6 @@ public final class StripLineBreaks
      */
     public final void setParameters(final Parameter[] parameters) {
         this.parameters = parameters;
+        initialized = false;
     }
 }