diff --git a/src/engine/fileOpsIns.cpp b/src/engine/fileOpsIns.cpp
index 817c28463..7f9559b3a 100644
--- a/src/engine/fileOpsIns.cpp
+++ b/src/engine/fileOpsIns.cpp
@@ -335,6 +335,10 @@ void DivEngine::loadDMP(SafeReader& reader, std::vector<DivInstrument*>& ret, St
       if (version>5) {
         for (int i=0; i<ins->std.waveMacro.len; i++) {
           ins->std.waveMacro.val[i]=reader.readI();
+          // piece of crap offset by 1
+          if (ins->type==DIV_INS_AY) {
+            ins->std.waveMacro.val[i]++;
+          }
         }
       } else {
         for (int i=0; i<ins->std.waveMacro.len; i++) {