diff --git a/doc/fixes37.0 b/doc/fixes37.0
index bded1dc2f..b0637b04f 100644
--- a/doc/fixes37.0
+++ b/doc/fixes37.0
@@ -837,6 +837,8 @@ an item thrown or dropped while swallowed was treated as being picked up by an
 segfault if gremlin fled weaponless hero wearing gold dragon scales/mail
 'disambiguate WHACK' patch affected field layout of objects[] but EDITLEVEL
 	wasn't incremented, allowing incompatable save files to be restored
+restore the boulder exception for piletops that had been unintentionally
+	removed during the expanded-glyphs changes
 
 curses: 'msg_window' option wasn't functional for curses unless the binary
 	also included tty support
diff --git a/include/display.h b/include/display.h
index 952d4b8a0..ac3971b38 100644
--- a/include/display.h
+++ b/include/display.h
@@ -888,9 +888,17 @@ enum glyph_offsets {
     ((int) ((obj)->corpsenm + (obj_is_piletop(obj)        \
                                 ? GLYPH_BODY_PILETOP_OFF  \
                                 : GLYPH_BODY_OFF)))
+
+/* Paraphrased rationale from the original commit for the boulder
+   exception: If a boulder is the topmost item on a pile, then it is
+   not mapped to a piletop glyph; mainly because boulders are "solid";
+   boulders dropped by monsters are nearly always over other objects;
+   also done so that special levels such a Sokoban can "hide" items
+   under the boulders. */
 #define normal_obj_to_glyph(obj) \
-    ((int) ((obj)->otyp + (obj_is_piletop(obj)            \
-                                ? GLYPH_OBJ_PILETOP_OFF   \
+    ((int) ((obj)->otyp + \
+            ((obj_is_piletop(obj) && ((obj)->otyp != BOULDER))      \
+                                ? GLYPH_OBJ_PILETOP_OFF             \
                                 : GLYPH_OBJ_OFF)))
 
 /* MRKR: Statues now have glyphs corresponding to the monster they    */