diff --git a/components/fpdebug/fpdbgdwarf.pas b/components/fpdebug/fpdbgdwarf.pas
index 85c2da050a..8d5adf92e1 100644
--- a/components/fpdebug/fpdbgdwarf.pas
+++ b/components/fpdebug/fpdbgdwarf.pas
@@ -1013,6 +1013,7 @@ begin
 
   if ASym.SymbolType = stValue then begin
     Result := ASym.Value;
+    if Result <> nil then
       Result.AddReference{$IFDEF WITH_REFCOUNT_DEBUG}(@FlastResult, 'FindSymbol'){$ENDIF};
   end
   else begin