diff --git a/sc/source/core/data/funcdesc.cxx b/sc/source/core/data/funcdesc.cxx
index 89e07465ea67..2a3f4219eae1 100644
--- a/sc/source/core/data/funcdesc.cxx
+++ b/sc/source/core/data/funcdesc.cxx
@@ -283,7 +283,7 @@ OUString ScFuncDesc::getFunctionName() const
 
 const formula::IFunctionCategory* ScFuncDesc::getCategory() const
 {
-    return ScGlobal::GetStarCalcFunctionMgr()->getCategory(nCategory);
+    return ScGlobal::GetStarCalcFunctionMgr()->getCategory(nCategory - 1);
 }
 
 OUString ScFuncDesc::getDescription() const