diff --git a/win/win32/mswproc.c b/win/win32/mswproc.c
index e386ee50e..7f2ac577e 100644
--- a/win/win32/mswproc.c
+++ b/win/win32/mswproc.c
@@ -1980,6 +1980,11 @@ mswin_preference_update(const char *pref)
         mswin_layout_main_window(NULL);
         return;
     }
+
+    if (stricmp(pref, "perm_invent") == 0) {
+        mswin_update_inventory();
+        return;
+    }
 }
 
 #define TEXT_BUFFER_SIZE 4096