diff --git a/proposal/sandbox/filterreaders/src/main/org/apache/tools/ant/filters/BaseFilterReader.java b/proposal/sandbox/filterreaders/src/main/org/apache/tools/ant/filters/BaseFilterReader.java
index cbea49c33..514313c4a 100644
--- a/proposal/sandbox/filterreaders/src/main/org/apache/tools/ant/filters/BaseFilterReader.java
+++ b/proposal/sandbox/filterreaders/src/main/org/apache/tools/ant/filters/BaseFilterReader.java
@@ -141,7 +141,7 @@ public abstract class BaseFilterReader
         }
 
         for (long i = 0; i < n; i++) {
-            if (in.read() == -1) {
+            if (read() == -1) {
                 return i;
             }
         }