diff --git a/src/engine/sysDef.cpp b/src/engine/sysDef.cpp
index ed4b74a33..5c044afc5 100644
--- a/src/engine/sysDef.cpp
+++ b/src/engine/sysDef.cpp
@@ -1588,7 +1588,7 @@ void DivEngine::registerSystems() {
 
   // TODO: custom sample format
   sysDefs[DIV_SYSTEM_ES5506]=new DivSysDef(
-    "Ensoniq ES5506", NULL, 0xb1, 0, 32, false, true, 0/*0x171*/, false, (1U<<DIV_SAMPLE_DEPTH_8BIT)|(1U<<DIV_SAMPLE_DEPTH_16BIT),
+    "Ensoniq ES5506", NULL, 0xb1, 0, 32, false, true, 0/*0x171*/, false, (1U<<DIV_SAMPLE_DEPTH_16BIT),
     "a sample chip made by Ensoniq, which is the basis for the GF1 chip found in Gravis' Ultrasound cards.",
     {"Channel 1", "Channel 2", "Channel 3", "Channel 4", "Channel 5", "Channel 6", "Channel 7", "Channel 8", "Channel 9", "Channel 10", "Channel 11", "Channel 12", "Channel 13", "Channel 14", "Channel 15", "Channel 16", "Channel 17", "Channel 18", "Channel 19", "Channel 20", "Channel 21", "Channel 22", "Channel 23", "Channel 24", "Channel 25", "Channel 26", "Channel 27", "Channel 28", "Channel 29", "Channel 30", "Channel 31", "Channel 32"},
     {"1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30", "31", "32"},