diff --git a/Source/Glide64/Settings.cpp b/Source/Glide64/Settings.cpp
index e966c1ad9..94d458a3e 100644
--- a/Source/Glide64/Settings.cpp
+++ b/Source/Glide64/Settings.cpp
@@ -78,7 +78,7 @@ CSettings::CSettings() :
     m_pal230(false),    //set special scale for PAL games
     m_correct_viewport(false), //correct viewport values
     m_zmode_compare_less(false), //force GR_CMP_LESS for zmode=0 (opaque)and zmode=1 (interpenetrating)
-old_style_adither(0), //apply alpha dither regardless of alpha_dither_mode
+    m_old_style_adither(false), //apply alpha dither regardless of alpha_dither_mode
 n64_z_scale(0), //scale vertex z value before writing to depth buffer, as N64 does.
 
     m_hacks((hacks_t)0),
@@ -177,7 +177,7 @@ void CSettings::RegisterSettings(void)
     game_setting(Set_fast_crc, "fast_crc", true);
     game_setting(Set_adjust_aspect, "adjust_aspect", true);
     game_setting(Set_zmode_compare_less, "zmode_compare_less", false);
-    game_setting(Set_old_style_adither, "old_style_adither", 0);
+    game_setting(Set_old_style_adither, "old_style_adither", false);
     game_setting(Set_n64_z_scale, "n64_z_scale", 0);
     game_setting_default(Set_optimize_texrect, "optimize_texrect", Set_optimize_texrect_default);
     game_setting(Set_ignore_aux_copy, "ignore_aux_copy", false);
@@ -730,7 +730,7 @@ void CSettings::ReadGameSettings(const char * name)
     m_fast_crc = GetSetting(Set_fast_crc) != 0;
     m_adjust_aspect = GetSetting(Set_adjust_aspect);
     m_zmode_compare_less = GetSetting(Set_zmode_compare_less);
-    g_settings->old_style_adither = GetSetting(Set_old_style_adither);
+    m_old_style_adither = GetSetting(Set_old_style_adither);
     g_settings->n64_z_scale = GetSetting(Set_n64_z_scale);
 
     m_ScreenRes = GetSetting(Set_Resolution);
diff --git a/Source/Glide64/Settings.h b/Source/Glide64/Settings.h
index 84242a51a..5ae83a1be 100644
--- a/Source/Glide64/Settings.h
+++ b/Source/Glide64/Settings.h
@@ -252,7 +252,7 @@ public:
     inline bool pal230(void) const { return m_pal230; } //use spheric mapping only, Ridge Racer 64
     inline bool correct_viewport(void) const { return m_correct_viewport; } //correct viewport values
     inline bool zmode_compare_less(void) const { return m_zmode_compare_less; } //force GR_CMP_LESS for zmode=0 (opaque)and zmode=1 (interpenetrating)
-    int old_style_adither; //apply alpha dither regardless of alpha_dither_mode
+    inline bool old_style_adither(void) const { return m_old_style_adither; } //apply alpha dither regardless of alpha_dither_mode
     int n64_z_scale; //scale vertex z value before writing to depth buffer, as N64 does.
     
     inline bool hacks(hacks_t hack) const { return (m_hacks & hack) == hack; } //Special game hacks
@@ -371,6 +371,7 @@ private:
     bool m_pal230;
     bool m_correct_viewport;
     bool m_zmode_compare_less;
+    bool m_old_style_adither;
     hacks_t m_hacks;
 };
 
diff --git a/Source/Glide64/Util.cpp b/Source/Glide64/Util.cpp
index f57fa44e3..43d05c41a 100644
--- a/Source/Glide64/Util.cpp
+++ b/Source/Glide64/Util.cpp
@@ -1876,12 +1876,15 @@ void update()
         }
         if (rdp.acmp == 3 && rdp.cycle_mode < 2)
         {
-            if (g_settings->old_style_adither || rdp.alpha_dither_mode != 3) {
+            if (g_settings->old_style_adither() || rdp.alpha_dither_mode != 3) 
+            {
                 WriteTrace(TraceRDP, TraceDebug, " |- alpha compare: dither");
                 grStippleMode(g_settings->stipple_mode());
             }
             else
+            {
                 grStippleMode(GR_STIPPLE_DISABLE);
+            }
         }
         else
         {