diff --git a/src/parser.ts b/src/parser.ts
index 6add6efa..5e4bd241 100644
--- a/src/parser.ts
+++ b/src/parser.ts
@@ -416,12 +416,13 @@ function parseSchema(
         const comment = `This interface was referenced by \`${parentSchemaName}\`'s JSON-Schema definition
 via the \`patternProperty\` "${key}".`
         ast.comment = ast.comment ? `${ast.comment}\n\n${comment}` : comment
+        ast.keyName = singlePatternProperty ? '[k: string]' : key
         return {
           ast,
           isPatternProperty: !singlePatternProperty,
           isRequired: singlePatternProperty || includes(schema.required || [], key),
           isUnreachableDefinition: false,
-          keyName: singlePatternProperty ? '[k: string]' : key,
+          keyName: ast.keyName,
         }
       }),
     )
diff --git a/test/__snapshots__/test/test.ts.md b/test/__snapshots__/test/test.ts.md
index c83bd491..bf3a0b4c 100644
--- a/test/__snapshots__/test/test.ts.md
+++ b/test/__snapshots__/test/test.ts.md
@@ -2230,6 +2230,14 @@ Generated by [AVA](https://avajs.dev).
         maybe?: string;␊
         [k: string]: Leaf | undefined;␊
       };␊
+      pattern?: {␊
+        maybe?: string;␊
+        /**␊
+         * This interface was referenced by \`undefined\`'s JSON-Schema definition␊
+         * via the \`patternProperty\` "leaf|tree".␊
+         */␊
+        [k: string]: unknown[] | undefined;␊
+      };␊
       [k: string]: string | undefined;␊
     }␊
     export interface Leaf {␊
diff --git a/test/__snapshots__/test/test.ts.snap b/test/__snapshots__/test/test.ts.snap
index 4d3e02b7..cdd1cd09 100644
Binary files a/test/__snapshots__/test/test.ts.snap and b/test/__snapshots__/test/test.ts.snap differ
diff --git a/test/e2e/options.strictIndexSignatures.ts b/test/e2e/options.strictIndexSignatures.ts
index cab3874d..a29f479c 100644
--- a/test/e2e/options.strictIndexSignatures.ts
+++ b/test/e2e/options.strictIndexSignatures.ts
@@ -22,6 +22,19 @@ export const input = {
         },
       },
     },
+    pattern: {
+      type: 'object',
+      properties: {
+        maybe: {
+          type: 'string',
+        },
+      },
+      patternProperties: {
+        'leaf|tree': {
+          type: 'array',
+        },
+      },
+    },
   },
   additionalProperties: {
     type: 'string',