diff --git a/apps/opencs/model/tools/referenceablecheck.cpp b/apps/opencs/model/tools/referenceablecheck.cpp
index 6615d0a57..dab61bfff 100644
--- a/apps/opencs/model/tools/referenceablecheck.cpp
+++ b/apps/opencs/model/tools/referenceablecheck.cpp
@@ -765,7 +765,7 @@ void CSMTools::ReferenceableCheckStage::npcCheck(
     }
     else //checking if there is a such race
     {
-        if (!mRaces.searchId(npc.mRace))
+        if (mRaces.searchId(npc.mRace) == -1)
         {
             messages.push_back(id.toString() + "|" + npc.mId + " has invalid race");
         }