diff --git a/packages/babel-types/README.md b/packages/babel-types/README.md
index a6cdf3593f..272d1099ba 100644
--- a/packages/babel-types/README.md
+++ b/packages/babel-types/README.md
@@ -2152,7 +2152,7 @@ See also `t.isTSInferType(node, opts)` and `t.assertTSInferType(node, opts)`.
 
 Aliases: `TSType`
 
- - `typeParameter`: `TSType` (required)
+ - `typeParameter`: `TSTypeParameter` (required)
 
 ---
 
diff --git a/packages/babel-types/src/definitions/typescript.js b/packages/babel-types/src/definitions/typescript.js
index 3aaba9ec6b..270146c5ca 100644
--- a/packages/babel-types/src/definitions/typescript.js
+++ b/packages/babel-types/src/definitions/typescript.js
@@ -238,7 +238,7 @@ defineType("TSInferType", {
   aliases: ["TSType"],
   visitor: ["typeParameter"],
   fields: {
-    typeParameter: validateType("TSType"),
+    typeParameter: validateType("TSTypeParameter"),
   },
 });
 
diff --git a/packages/babylon/src/plugins/typescript.js b/packages/babylon/src/plugins/typescript.js
index e5494e92bd..6744ed16d9 100644
--- a/packages/babylon/src/plugins/typescript.js
+++ b/packages/babylon/src/plugins/typescript.js
@@ -637,7 +637,7 @@ export default (superClass: Class<Parser>): Class<Parser> =>
       this.expectContextual("infer");
       const typeParameter = this.startNode();
       typeParameter.name = this.parseIdentifierName(typeParameter.start);
-      node.typeParameter = this.finishNode(typeParameter, "TypeParameter");
+      node.typeParameter = this.finishNode(typeParameter, "TSTypeParameter");
       return this.finishNode(node, "TSInferType");
     }
 
diff --git a/packages/babylon/test/fixtures/typescript/types/conditional-infer/output.json b/packages/babylon/test/fixtures/typescript/types/conditional-infer/output.json
index dd94232cb8..92cd4d3d86 100644
--- a/packages/babylon/test/fixtures/typescript/types/conditional-infer/output.json
+++ b/packages/babylon/test/fixtures/typescript/types/conditional-infer/output.json
@@ -181,7 +181,7 @@
                   }
                 },
                 "typeParameter": {
-                  "type": "TypeParameter",
+                  "type": "TSTypeParameter",
                   "start": 35,
                   "end": 36,
                   "loc": {