diff --git a/src/reskit/soundtrack/formats/dmf.rs b/src/reskit/soundtrack/formats/dmf.rs
index 1554626..8f7fec1 100644
--- a/src/reskit/soundtrack/formats/dmf.rs
+++ b/src/reskit/soundtrack/formats/dmf.rs
@@ -958,7 +958,7 @@ impl EchoFormat for DmfModule {
 }
 
 fn get_eef_volume( dmf_volume: u8 ) -> Result<u8, Box<dyn Error>> {
-    Ok( min( dmf_volume, 0x0F ) )
+    Ok( min( 0x0F - dmf_volume, 0x0F ) )
 }
 
 fn get_eef_shift( dmf_shift: i8 ) -> Result<u8, Box<dyn Error>> {