diff --git a/test/suite0003.janet b/test/suite0003.janet
index f94b1b58..17c9d2d1 100644
--- a/test/suite0003.janet
+++ b/test/suite0003.janet
@@ -349,7 +349,7 @@
 (def janet-longstring
   ~{:delim (some "`")
     :open (capture :delim :n)
-    :close (cmt (* (not (> -1 "`")) (-> :n) (<- :delim)) ,=)
+    :close (cmt (* (not (> -1 "`")) (-> :n) (<- (backmatch :n))) ,=)
     :main (* :open (any (if-not :close 1)) :close -1)})
 
 (check-match janet-longstring "`john" false)
@@ -359,6 +359,7 @@
 (check-match janet-longstring "``  ``" true)
 (check-match janet-longstring "``` `` ```" true)
 (check-match janet-longstring "``  ```" false)
+(check-match janet-longstring "`a``b`" false)
 
 # Line and column capture
 
diff --git a/test/suite0007.janet b/test/suite0007.janet
index 3d682678..48889298 100644
--- a/test/suite0007.janet
+++ b/test/suite0007.janet
@@ -60,7 +60,7 @@
     :buffer (/ '(* "@" :bytes) (constant :string))
     :long-bytes {:delim (some "`")
                  :open (capture :delim :n)
-                 :close (cmt (* (not (> -1 "`")) (-> :n) ':delim) ,=)
+                 :close (cmt (* (not (> -1 "`")) (-> :n) '(backmatch :n)) ,=)
                  :main (drop (* :open (any (if-not :close 1)) :close))}
     :long-string (/ ':long-bytes (constant :string))
     :long-buffer (/ '(* "@" :long-bytes) (constant :string))