diff --git a/sys/share/random.c b/sys/share/random.c
index 6d3d5e45c..cc865c4e5 100644
--- a/sys/share/random.c
+++ b/sys/share/random.c
@@ -38,6 +38,8 @@
 
 #include "hack.h"
 
+#if defined(USE_ISAAC64) && !defined(RANDOM)
+#else
 #ifdef LIBC_SCCS
 #ifndef lint
 static char sccsid[] = "@(#)random.c	5.5 (Berkeley) 7/6/88";
@@ -377,3 +379,7 @@ random()
     }
     return (i);
 }
+#endif /* else defined(USE_ISAAC64) && !defined(RANDOM) */
+
+
+
diff --git a/sys/winnt/Makefile.msc b/sys/winnt/Makefile.msc
index 97001da6e..9dd482218 100644
--- a/sys/winnt/Makefile.msc
+++ b/sys/winnt/Makefile.msc
@@ -129,13 +129,9 @@ OBJ     = o
 # (see pcconf.h). Set to nothing if not used.
 #
 
-RANDOM = $(OBJ)\isaac64.o
-#RANDOM	= $(OBJ)\random.o
+RANDOM	= $(OBJ)\random.o
 #RANDOM	=
-BCRYPT=
-! IF ("$(RANDOM)"=="$(OBJ)\isaac64.o")
 BCRYPT=bcrypt.lib
-! ENDIF
 WINPFLAG= -DTILES -DMSWIN_GRAPHICS -DWIN32CON
 
 # To store all the level files,
@@ -223,7 +219,7 @@ VOBJ10 = $(O)mail.o     $(O)makemon.o  $(O)mapglyph.o $(O)mcastu.o
 VOBJ11 = $(O)mhitm.o    $(O)mhitu.o    $(O)minion.o   $(O)mklev.o   
 VOBJ12 = $(O)mkmap.o    $(O)mkmaze.o   $(O)mkobj.o    $(O)mkroom.o  
 VOBJ13 = $(O)mon.o      $(O)mondata.o  $(O)monmove.o  $(O)monst.o   
-VOBJ14 = $(O)mplayer.o  $(O)mthrowu.o  $(O)muse.o    
+VOBJ14 = $(O)mplayer.o  $(O)mthrowu.o  $(O)muse.o     $(O)isaac64.o
 VOBJ15 = $(O)music.o    $(O)o_init.o   $(O)objects.o  $(O)objnam.o  
 VOBJ16 = $(O)options.o  $(O)pager.o    $(O)pickup.o   $(O)pline.o   
 VOBJ17 = $(O)polyself.o $(O)potion.o   $(O)pray.o     $(O)priest.o  
diff --git a/win/Qt/qt_win.cpp b/win/Qt/qt_win.cpp
index bd281d3c5..28a68207a 100644
--- a/win/Qt/qt_win.cpp
+++ b/win/Qt/qt_win.cpp
@@ -3461,7 +3461,7 @@ void NetHackQtInvUsageWindow::drawWorn(QPainter& painter, obj* nhobj, int x, int
 {
     short int glyph;
     if (nhobj)
-	glyph=obj_to_glyph(nhobj);
+	glyph=obj_to_glyph(nhobj, rn2_on_display_rng);
     else if (canbe)
 	glyph=cmap_to_glyph(S_room);
     else
diff --git a/win/Qt4/qt4inv.cpp b/win/Qt4/qt4inv.cpp
index f753ad097..6d1a201b4 100644
--- a/win/Qt4/qt4inv.cpp
+++ b/win/Qt4/qt4inv.cpp
@@ -38,7 +38,7 @@ void NetHackQtInvUsageWindow::drawWorn(QPainter& painter, obj* nhobj, int x, int
 {
     short int glyph;
     if (nhobj)
-	glyph=obj_to_glyph(nhobj);
+	glyph=obj_to_glyph(nhobj, rn2_on_display_rng);
     else if (canbe)
 	glyph=cmap_to_glyph(S_room);
     else
diff --git a/win/gnome/gnworn.c b/win/gnome/gnworn.c
index 04c4e4772..4d7303d15 100644
--- a/win/gnome/gnworn.c
+++ b/win/gnome/gnworn.c
@@ -75,7 +75,7 @@ image_of_worn_object(struct obj *o)
     GdkImlibImage *im;
 
     if (o)
-        glyph = obj_to_glyph(o);
+        glyph = obj_to_glyph(o, rn2_on_display_rng);
     else
         glyph = cmap_to_glyph(S_stone);
 
diff --git a/win/win32/vs2017/NetHack.vcxproj b/win/win32/vs2017/NetHack.vcxproj
index 3a4412efe..be83d0a86 100644
--- a/win/win32/vs2017/NetHack.vcxproj
+++ b/win/win32/vs2017/NetHack.vcxproj
@@ -152,6 +152,7 @@
     <ClCompile Include="$(SrcDir)zap.c" />
     <ClCompile Include="$(SysShareDir)cppregex.cpp" />
     <ClCompile Include="$(SysShareDir)nhlan.c" />
+    <ClCompile Include="$(SysShareDir)random.c" />
     <ClCompile Include="$(SysWinntDir)ntsound.c" />
     <ClCompile Include="$(SysWinntDir)nttty.c" />
     <ClCompile Include="$(SysWinntDir)stubs.c">
diff --git a/win/win32/vs2017/NetHackW.vcxproj b/win/win32/vs2017/NetHackW.vcxproj
index e801b1583..a50dccb3a 100644
--- a/win/win32/vs2017/NetHackW.vcxproj
+++ b/win/win32/vs2017/NetHackW.vcxproj
@@ -147,6 +147,7 @@
     <ClCompile Include="$(SrcDir)zap.c" />
     <ClCompile Include="$(SysShareDir)cppregex.cpp" />
     <ClCompile Include="$(SysShareDir)nhlan.c" />
+    <ClCompile Include="$(SysShareDir)random.c" />
     <ClCompile Include="$(SysWinntDir)ntsound.c" />
     <ClCompile Include="$(SysWinntDir)stubs.c">
       <PreprocessorDefinitions>TTYSTUB;</PreprocessorDefinitions>