diff --git a/packages/babel-parser/src/plugins/typescript/index.js b/packages/babel-parser/src/plugins/typescript/index.js
index 94dad4c21fbf..9447dd03256e 100644
--- a/packages/babel-parser/src/plugins/typescript/index.js
+++ b/packages/babel-parser/src/plugins/typescript/index.js
@@ -1068,6 +1068,7 @@ export default (superClass: Class<Parser>): Class<Parser> =>
             node.asserts = true;
             thisTypePredicate = this.finishNode(node, "TSTypePredicate");
           } else {
+            this.resetStartLocationFromNode(thisTypePredicate, node);
             (thisTypePredicate: N.TsTypePredicate).asserts = true;
           }
           t.typeAnnotation = thisTypePredicate;
diff --git a/packages/babel-parser/test/fixtures/typescript/assert-predicate/asserts-this-with-predicate/output.json b/packages/babel-parser/test/fixtures/typescript/assert-predicate/asserts-this-with-predicate/output.json
index a98a1eefa26a..8a552c9028ad 100644
--- a/packages/babel-parser/test/fixtures/typescript/assert-predicate/asserts-this-with-predicate/output.json
+++ b/packages/babel-parser/test/fixtures/typescript/assert-predicate/asserts-this-with-predicate/output.json
@@ -40,7 +40,7 @@
                 "start":21,"end":42,"loc":{"start":{"line":2,"column":9},"end":{"line":2,"column":30}},
                 "typeAnnotation": {
                   "type": "TSTypePredicate",
-                  "start":31,"end":42,"loc":{"start":{"line":2,"column":19},"end":{"line":2,"column":30}},
+                  "start":23,"end":42,"loc":{"start":{"line":2,"column":11},"end":{"line":2,"column":30}},
                   "parameterName": {
                     "type": "TSThisType",
                     "start":31,"end":35,"loc":{"start":{"line":2,"column":19},"end":{"line":2,"column":23}}
@@ -86,7 +86,7 @@
                   "start":58,"end":79,"loc":{"start":{"line":3,"column":12},"end":{"line":3,"column":33}},
                   "typeAnnotation": {
                     "type": "TSTypePredicate",
-                    "start":68,"end":79,"loc":{"start":{"line":3,"column":22},"end":{"line":3,"column":33}},
+                    "start":60,"end":79,"loc":{"start":{"line":3,"column":14},"end":{"line":3,"column":33}},
                     "parameterName": {
                       "type": "TSThisType",
                       "start":68,"end":72,"loc":{"start":{"line":3,"column":22},"end":{"line":3,"column":26}}
@@ -125,4 +125,4 @@
     ],
     "directives": []
   }
-}
\ No newline at end of file
+}