diff --git a/js/test.js b/js/test.js
index ba86be51..bf89e906 100644
--- a/js/test.js
+++ b/js/test.js
@@ -462,12 +462,8 @@ describe('CryptTool', function () {
             {tests: 5, quiet: true});
         });
 
-        it('can en- and decrypt a particular message (#260)', function () {
-            jsc.check(jsc.forall(
-                'string',
-                'string',
-                function (key, password) {
-                    var message = `
+        it('can decrypt a particular message (#260)', function () {
+            var message = `
 1 subgoal
 
 inv : Assert
@@ -489,18 +485,14 @@ isWhile : interp (while expr sBody) (MemElem mem) =
 ======================== ( 1 / 1 )
 conseq_or_bottom inv (interp (nth_iterate sBody n) (MemElem mem))
 
-`,
-                        key = 'y+4So8y7GYliFc+LcyFhXYSyMW/v1CdGqnSND+MPtNw=',
-                        paste = '{"iv":"LwfPcuKXYo2f6gjrtVRbcg==","v":1,"iter":1000,"ks":256,"ts":128,"mode":"gcm","adata":"","cipher":"aes","salt":"gw7Pe+7WGGI=","ct":"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"}';
-                    return message === $.PrivateBin.CryptTool.decipher(
-                        key,
-                        password,
-                        $.PrivateBin.CryptTool.cipher(key, password, message)
-                    );
-                }
-            ),
-            // reducing amount of checks
-            {tests: 5, quiet: true});
+`;
+            if (message !== $.PrivateBin.CryptTool.decipher(
+                'y+4So8y7GYliFc+LcyFhXYSyMW/v1CdGqnSND+MPtNw=',
+                '', // no password
+                '{"iv":"LwfPcuKXYo2f6gjrtVRbcg==","v":1,"iter":1000,"ks":256,"ts":128,"mode":"gcm","adata":"","cipher":"aes","salt":"gw7Pe+7WGGI=","ct":"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"}'
+            )) {
+                throw Error('a particular message (#260) could not be deciphered');
+            }
         });
 
         // The below static unit tests are included to ensure deciphering of "classic"