diff --git a/src/mame/drivers/namcos23.cpp b/src/mame/drivers/namcos23.cpp
index c5bef6464ec..45f91009b16 100644
--- a/src/mame/drivers/namcos23.cpp
+++ b/src/mame/drivers/namcos23.cpp
@@ -2881,7 +2881,9 @@ WRITE16_MEMBER(namcos23_state::mcuen_w)
 		break;
 
 	default:
-		logerror("mcuen_w: mask %04x, data %04x @ %x\n", mem_mask, data, offset);
+		// For some reason, the main program write the high 16bits of the
+		// 32 bits words of itself there...
+		//		logerror("mcuen_w: mask %04x, data %04x @ %x\n", mem_mask, data, offset);
 		break;
 	}
 }