diff --git a/java/ql/lib/semmle/code/java/dataflow/internal/TaintTrackingUtil.qll b/java/ql/lib/semmle/code/java/dataflow/internal/TaintTrackingUtil.qll
index b275c381150..af8f2273cbe 100644
--- a/java/ql/lib/semmle/code/java/dataflow/internal/TaintTrackingUtil.qll
+++ b/java/ql/lib/semmle/code/java/dataflow/internal/TaintTrackingUtil.qll
@@ -255,6 +255,7 @@ private class BulkData extends RefType {
  * status of its argument.
  */
 private predicate inputStreamWrapper(Constructor c, int argi) {
+  not c.fromSource() and
   c.getParameterType(argi) instanceof BulkData and
   c.getDeclaringType().getASourceSupertype+().hasQualifiedName("java.io", "InputStream")
 }