diff --git a/src/engine/sysDef.cpp b/src/engine/sysDef.cpp
index d6bf52137..310a72364 100644
--- a/src/engine/sysDef.cpp
+++ b/src/engine/sysDef.cpp
@@ -2448,7 +2448,7 @@ void DivEngine::registerSystems() {
   sysDefs[DIV_SYSTEM_SM8521]=new DivSysDef(
     _("Sharp SM8521"), NULL, 0xc8, 0, 3, 3, 3,
     false, true, 0, false, 0, 32, 16,
-    _("a SoC with wavetable sound hardware."),
+    _("a SoC with wavetable sound hardware.\n\nWARNING: NOISE EMULATION IS CURRENTLY INACCURATE DUE TO LACK OF DOCUMENTATION."),
     DivChanDefFunc({
       DivChanDef(_("Channel 1"), "CH1", DIV_CH_WAVE , DIV_INS_SM8521),
       DivChanDef(_("Channel 2"), "CH2", DIV_CH_WAVE , DIV_INS_SM8521),