diff --git a/src/engine/fileOpsIns.cpp b/src/engine/fileOpsIns.cpp
index b83a6b48..42723c0d 100644
--- a/src/engine/fileOpsIns.cpp
+++ b/src/engine/fileOpsIns.cpp
@@ -147,7 +147,7 @@ void DivEngine::loadDMP(SafeReader& reader, std::vector<DivInstrument*>& ret, St
           logD("instrument type is C64");
           break;
         case 8: // Arcade
-          ins->type=DIV_INS_FM;
+          ins->type=DIV_INS_OPM;
           logD("instrument type is Arcade");
           break;
         case 9: // Neo Geo