diff --git a/jena-arq/src/main/java/org/apache/jena/sparql/exec/QueryExecDatasetBuilder.java b/jena-arq/src/main/java/org/apache/jena/sparql/exec/QueryExecDatasetBuilder.java
index 42e2dcf7f5f..d2d7aa69892 100644
--- a/jena-arq/src/main/java/org/apache/jena/sparql/exec/QueryExecDatasetBuilder.java
+++ b/jena-arq/src/main/java/org/apache/jena/sparql/exec/QueryExecDatasetBuilder.java
@@ -164,7 +164,7 @@ public QueryExecDatasetBuilder initialBinding(Binding binding) {
 
     @Override
     public QueryExecDatasetBuilder timeout(long timeout) {
-        return timeout(timeout, TimeUnit.MICROSECONDS);
+        return timeout(timeout, TimeUnit.MILLISECONDS);
     }
 
     @Override