diff --git a/src/sound/music_dumb.cpp b/src/sound/music_dumb.cpp
index 1e9b6d6fc..5dc100108 100644
--- a/src/sound/music_dumb.cpp
+++ b/src/sound/music_dumb.cpp
@@ -129,7 +129,11 @@ CVAR(Bool, mod_autochip,				false, CVAR_ARCHIVE|CVAR_GLOBALCONFIG);
 CVAR(Int,  mod_autochip_size_force,		100,   CVAR_ARCHIVE|CVAR_GLOBALCONFIG);
 CVAR(Int,  mod_autochip_size_scan,		500,   CVAR_ARCHIVE|CVAR_GLOBALCONFIG);
 CVAR(Int,  mod_autochip_scan_threshold, 12,	   CVAR_ARCHIVE|CVAR_GLOBALCONFIG);
-CVAR(Float, mod_dumb_mastervolume,		1.f,   CVAR_ARCHIVE|CVAR_GLOBALCONFIG);
+CUSTOM_CVAR(Float, mod_dumb_mastervolume, 1.f, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
+{
+	if (self < 0.5f) self = 0.5f;
+	else if (self > 16.f) self = 16.f;
+}
 
 // PRIVATE DATA DEFINITIONS ------------------------------------------------
 
diff --git a/wadsrc/static/menudef.txt b/wadsrc/static/menudef.txt
index 268787a2b..02c4ce314 100644
--- a/wadsrc/static/menudef.txt
+++ b/wadsrc/static/menudef.txt
@@ -1663,7 +1663,7 @@ OptionMenu ModReplayerOptions
 	Title "MODULE REPLAYER OPTIONS"
 	Option "Replayer engine",		"mod_dumb", "ModReplayers"
 	StaticText " "
-	Slider "Master Volume",			"mod_dumb_mastervolume", 1, 32, 1, 1
+	Slider "Master Volume",			"mod_dumb_mastervolume", 1, 16, 0.5, 1
 	Option "Sample rate",			"mod_samplerate", "SampleRates", "mod_dumb"
 	Option "Quality",				"mod_interp", "ModQuality", "mod_dumb"
 	Option "Volume ramping",		"mod_volramp", "ModVolumeRamps", "mod_dumb"