diff --git a/src/common.js b/src/common.js
index c4babd9bee..f6973f45fe 100644
--- a/src/common.js
+++ b/src/common.js
@@ -1282,7 +1282,7 @@
 
             var pslice = function(string, depth) {
                 if (depth > 0) {
-                    return string.substring(0, depth);
+                    return string.substring(0, string.length - depth);
                 }
                 return string;
             };
@@ -1415,8 +1415,8 @@
                 results.push(domain[i]);
             }
             if (this.is_subdomain(domain[i])) {
-                results = results.concat(this.replace_ending_clause(domain[i],
-                            clause));
+                results.push(
+                    this.replace_ending_clause(domain[i], clause));
             } else {
                 results.push(clause);
             }
diff --git a/tests/sao.js b/tests/sao.js
index c4e3c5a5ee..a1ec179f4c 100644
--- a/tests/sao.js
+++ b/tests/sao.js
@@ -2993,6 +2993,7 @@
         ['', ["Name: "]],
         [' ', ["", "Name: "]],
         ["Name: foo or", ["Name: foo"]],
+        ['Name: foo (Name: foo or N', ["Name: foo (Name: foo or Name: "]],
         ].forEach(function(test) {
             var value = test[0];
             var expected = test[1];