diff --git a/plugins/xslt-debugger/engine/impl/src/org/intellij/plugins/xsltDebugger/rt/engine/local/saxon9/Saxon9StyleFrame.java b/plugins/xslt-debugger/engine/impl/src/org/intellij/plugins/xsltDebugger/rt/engine/local/saxon9/Saxon9StyleFrame.java
index 54b24dabb2a9..ff19095fb87a 100644
--- a/plugins/xslt-debugger/engine/impl/src/org/intellij/plugins/xsltDebugger/rt/engine/local/saxon9/Saxon9StyleFrame.java
+++ b/plugins/xslt-debugger/engine/impl/src/org/intellij/plugins/xsltDebugger/rt/engine/local/saxon9/Saxon9StyleFrame.java
@@ -184,7 +184,7 @@ class Saxon9StyleFrame<N extends StyleElement> extends AbstractSaxon9Frame<Debug
     public SequenceValue(Item value, SequenceIterator it, ItemType type) throws XPathException {
       String s = "(" + value.getStringValue() + ", " + it.current().getStringValue();
       while (it.next() != null) {
-        s += it.current().getStringValue();
+        s += ", " + it.current().getStringValue();
       }
       s += ")";
       myValue = s;