diff --git a/src/am_map.c b/src/am_map.c
index 4a3899d2..9f82ff90 100644
--- a/src/am_map.c
+++ b/src/am_map.c
@@ -588,6 +588,29 @@ void AM_enableSmoothLines(void)
   AM_drawFline = map_smooth_lines ? AM_drawFline_Smooth : AM_drawFline_Vanilla;
 }
 
+static void AM_initScreenSize(void)
+{
+  // killough 2/7/98: get rid of finit_ vars
+  // to allow runtime setting of width/height
+  //
+  // killough 11/98: ... finally add hires support :)
+
+  f_w = video.width;
+  if (automapoverlay && scaledviewheight == SCREENHEIGHT)
+    f_h = video.height;
+  else
+    f_h = video.height - ((ST_HEIGHT * video.yscale) >> FRACBITS);
+}
+
+void AM_ResetScreenSize(void)
+{
+  AM_saveScaleAndLoc();
+
+  AM_initScreenSize();
+
+  AM_restoreScaleAndLoc();
+}
+
 //
 // AM_LevelInit()
 //
@@ -603,19 +626,10 @@ static void AM_LevelInit(void)
   static int precalc_once;
 
   automapfirststart = true;
-  
+
   f_x = f_y = 0;
 
-  // killough 2/7/98: get rid of finit_ vars
-  // to allow runtime setting of width/height
-  //
-  // killough 11/98: ... finally add hires support :)
-
-  f_w = video.width;
-  if (automapoverlay && scaledviewheight == SCREENHEIGHT)
-    f_h = video.height;
-  else
-    f_h = video.height - ((ST_HEIGHT * video.yscale) >> FRACBITS);
+  AM_initScreenSize();
 
   AM_enableSmoothLines();
 
@@ -898,11 +912,7 @@ boolean AM_Responder
         default: togglemsg("%s", s_AMSTR_OVERLAYOFF); break;
       }
 
-      if (automapoverlay && scaledviewheight == SCREENHEIGHT)
-        f_h = video.height;
-      else
-        f_h = video.height - ((ST_HEIGHT * video.yscale) >> FRACBITS);
-
+      AM_initScreenSize();
       AM_activateNewScale();
     }
     else if (M_InputActivated(input_map_rotate))
diff --git a/src/am_map.h b/src/am_map.h
index 4b1268f9..54df3590 100644
--- a/src/am_map.h
+++ b/src/am_map.h
@@ -54,6 +54,8 @@ extern void AM_initVariables(void);
 
 void AM_SetMapCenter(fixed_t x, fixed_t y);
 
+void AM_ResetScreenSize(void);
+
 typedef struct
 {
  int64_t x,y;
diff --git a/src/i_video.c b/src/i_video.c
index 40ca2467..1cde26e9 100644
--- a/src/i_video.c
+++ b/src/i_video.c
@@ -1047,6 +1047,9 @@ static void ResetResolution(int height)
     R_InitVisplanesRes();
     setsizeneeded = true; // run R_ExecuteSetViewSize
 
+    if (automapactive)
+      AM_ResetScreenSize();
+
     I_InitDiskFlash();
 
     I_Printf(VB_DEBUG, "ResetResolution: %dx%d", video.width, video.height);
@@ -1530,9 +1533,6 @@ void I_ResetScreen(void)
     ResetResolution(CurrentResolutionMode());
     ResetLogicalSize();
 
-    if (automapactive)
-        AM_Start();        // Reset automap dimensions
-
     ST_Start();            // Reset palette
 
     if (gamestate == GS_INTERMISSION)
diff --git a/src/r_main.c b/src/r_main.c
index 45ce5c9e..bea763b5 100644
--- a/src/r_main.c
+++ b/src/r_main.c
@@ -562,13 +562,6 @@ void R_ExecuteSetViewSize (void)
     // [crispy] forcefully initialize the status bar backing screen
     ST_refreshBackground(true);
 
-    // [FG] reinitialize Automap
-    if (automapactive)
-        AM_Start();
-
-    // [FG] spectre drawing mode
-    R_SetFuzzColumnMode();
-
     pspr_interp = false;
 }
 
@@ -584,6 +577,9 @@ void R_Init (void)
   R_InitLightTables();
   R_InitSkyMap();
   R_InitTranslationTables();
+
+  // [FG] spectre drawing mode
+  R_SetFuzzColumnMode();
 }
 
 //