diff --git a/lib/rules/semi-style.js b/lib/rules/semi-style.js
index fa258754dcb..97fcc3ac820 100644
--- a/lib/rules/semi-style.js
+++ b/lib/rules/semi-style.js
@@ -79,7 +79,7 @@ module.exports = {
                             : "the beginning of the next line"
                     },
                     fix(fixer) {
-                        if (commentsExistBetween(prevToken, nextToken)) {
+                        if (prevToken && nextToken && commentsExistBetween(prevToken, nextToken)) {
                             return null;
                         }
 
diff --git a/tests/lib/rules/semi-style.js b/tests/lib/rules/semi-style.js
index a0281bff709..43968facffb 100644
--- a/tests/lib/rules/semi-style.js
+++ b/tests/lib/rules/semi-style.js
@@ -113,6 +113,12 @@ ruleTester.run("semi-style", rule, {
             options: ["last"],
             errors: ["Expected this semicolon to be at the end of the previous line."]
         },
+        {
+            code: "foo()\n;",
+            output: "foo();\n",
+            options: ["last"],
+            errors: ["Expected this semicolon to be at the end of the previous line."]
+        },
 
         {
             code: "foo;\nbar",