diff --git a/src/engine/legacySample.cpp b/src/engine/legacySample.cpp
index 21734c903..6e67dd3e1 100644
--- a/src/engine/legacySample.cpp
+++ b/src/engine/legacySample.cpp
@@ -283,6 +283,7 @@ bool DivEngine::convertLegacySampleMode() {
             continue;
           }
           sampleMode=1;
+          preferredInsType=DIV_INS_ADPCMB;
           break;
         case DIV_SYSTEM_Y8950_DRUMS:
           // Y8950 ADPCM