diff --git a/PySide/QtCore/typesystem_core.xml b/PySide/QtCore/typesystem_core.xml
index d87b7ea..5f12e54 100644
--- a/PySide/QtCore/typesystem_core.xml
+++ b/PySide/QtCore/typesystem_core.xml
@@ -694,6 +694,7 @@
   <rejection class="QString" function-name="fromLatin1_helper"/>
   <rejection class="QString" function-name="fromAscii_helper"/>
   <rejection class="QString" function-name="toWCharArray"/>
+  <rejection class="QString" function-name="sprintf"/>
   <rejection class="QString" function-name="vsprintf"/>
   <rejection class="QString" function-name="fromStdWString"/>
   <rejection class="QStringRef" function-name="constData"/>