diff --git a/patchlevel.h b/patchlevel.h
index eb2aca52..d8a1b2a9 100644
--- a/patchlevel.h
+++ b/patchlevel.h
@@ -25,6 +25,6 @@
    regexp `^#define[ 	]*PATCHLEVEL', since that's what support/mkversion.sh
    looks for to find the patch level (for the sccs version string). */
 
-#define PATCHLEVEL 12
+#define PATCHLEVEL 13
 
 #endif /* _PATCHLEVEL_H_ */
diff --git a/subst.c b/subst.c
index 327de083..dda1d55c 100644
--- a/subst.c
+++ b/subst.c
@@ -3825,6 +3825,7 @@ expand_string_assignment (string, quoted)
 #else
   td.flags = W_ASSIGNRHS;
 #endif
+  td.flags |= (W_NOGLOB|W_TILDEEXP);
   td.word = savestring (string);
   value = call_expand_word_internal (&td, quoted, 0, (int *)NULL, (int *)NULL);
   FREE (td.word);