diff --git a/dlls/msxml3/saxreader.c b/dlls/msxml3/saxreader.c
index a69b0e6ed11..2573e84f37c 100644
--- a/dlls/msxml3/saxreader.c
+++ b/dlls/msxml3/saxreader.c
@@ -2045,6 +2045,7 @@ static HRESULT internal_parse(
                 hr = internal_parseBuffer(This, (const char*)bstrData,
                         SysStringByteLen(bstrData), vbInterface);
                 IXMLDOMDocument_Release(xmlDoc);
+                SysFreeString(bstrData);
                 break;
             }
             if(IUnknown_QueryInterface(V_UNKNOWN(&varInput),