diff --git a/sc/source/core/tool/chgtrack.cxx b/sc/source/core/tool/chgtrack.cxx
index a9ccee7ecadc..067ff74b8c39 100644
--- a/sc/source/core/tool/chgtrack.cxx
+++ b/sc/source/core/tool/chgtrack.cxx
@@ -1485,7 +1485,7 @@ void ScChangeActionContent::GetDescription(
     if (aTmpStr.isEmpty())
         aTmpStr = ScGlobal::GetRscString( STR_CHANGED_BLANK );
 
-    nPos = aRsc.indexOfAsciiL("#2", 2, nPos);
+    nPos = nPos >= 0 ? aRsc.indexOfAsciiL("#2", 2, nPos) : -1;
     if (nPos >= 0)
     {
         aRsc = aRsc.replaceAt(nPos, 2, aTmpStr);