diff --git a/packages/babel-plugin-transform-flow-comments/src/index.ts b/packages/babel-plugin-transform-flow-comments/src/index.ts
index 524479c91654..d851f07f6faa 100644
--- a/packages/babel-plugin-transform-flow-comments/src/index.ts
+++ b/packages/babel-plugin-transform-flow-comments/src/index.ts
@@ -143,9 +143,9 @@ export default declare(api => {
       AssignmentPattern: {
         exit({ node }) {
           const { left } = node;
-          // @ts-expect-error optional is not in ObjectPattern
+          // @ts-expect-error optional is not in TSAsExpression
           if (left.optional) {
-            // @ts-expect-error optional is not in ObjectPattern
+            // @ts-expect-error optional is not in TSAsExpression
             left.optional = false;
           }
         },
@@ -238,7 +238,6 @@ export default declare(api => {
             ofPath: path.get("typeAnnotation"),
             toPath: path,
             optional:
-              // @ts-expect-error optional is not in ObjectPattern
               node.optional ||
               // @ts-expect-error Fixme: optional is not in t.TypeAnnotation
               node.typeAnnotation.optional,
diff --git a/packages/babel-plugin-transform-flow-strip-types/src/index.ts b/packages/babel-plugin-transform-flow-strip-types/src/index.ts
index d633741f21f6..db6060e1d726 100644
--- a/packages/babel-plugin-transform-flow-strip-types/src/index.ts
+++ b/packages/babel-plugin-transform-flow-strip-types/src/index.ts
@@ -136,9 +136,9 @@ export default declare((api, opts: Options) => {
 
       AssignmentPattern({ node }) {
         if (skipStrip) return;
-        // @ts-expect-error optional is not in ObjectPattern
+        // @ts-expect-error optional is not in TSAsExpression
         if (node.left.optional) {
-          // @ts-expect-error optional is not in ObjectPattern
+          // @ts-expect-error optional is not in TSAsExpression
           node.left.optional = false;
         }
       },
@@ -159,9 +159,9 @@ export default declare((api, opts: Options) => {
             // must not be a MemberExpression
             param = param.left;
           }
-          // @ts-expect-error optional is not in ObjectPattern
+          // @ts-expect-error optional is not in TSAsExpression
           if (param.optional) {
-            // @ts-expect-error optional is not in ObjectPattern
+            // @ts-expect-error optional is not in TSAsExpression
             param.optional = false;
           }
         }