diff --git a/plugins/config-schema/src/components/SchemaView/MatchView.tsx b/plugins/config-schema/src/components/SchemaView/MatchView.tsx
index df0dbba8ef..db6060b31a 100644
--- a/plugins/config-schema/src/components/SchemaView/MatchView.tsx
+++ b/plugins/config-schema/src/components/SchemaView/MatchView.tsx
@@ -34,6 +34,7 @@ export function MatchView({
       <Typography variant="overline">{label}</Typography>
       {schema.map((optionSchema, index) => (
         <ChildView
+          key={index}
           path={`${path}/${index + 1}`}
           depth={depth + 1}
           schema={optionSchema}
diff --git a/plugins/config-schema/src/components/SchemaView/ObjectView.tsx b/plugins/config-schema/src/components/SchemaView/ObjectView.tsx
index e3d0effd0d..8c72e169d3 100644
--- a/plugins/config-schema/src/components/SchemaView/ObjectView.tsx
+++ b/plugins/config-schema/src/components/SchemaView/ObjectView.tsx
@@ -51,6 +51,7 @@ export function ObjectView({ path, depth, schema }: SchemaViewProps) {
           {depth > 0 && <Typography variant="overline">Properties</Typography>}
           {properties.map(([name, propSchema], index) => (
             <ChildView
+              key={name}
               path={path ? `${path}.${name}` : name}
               depth={depth + 1}
               schema={propSchema}
@@ -67,6 +68,7 @@ export function ObjectView({ path, depth, schema }: SchemaViewProps) {
           )}
           {patternProperties.map(([name, propSchema], index) => (
             <ChildView
+              key={name}
               path={path ? `${path}.<${name}>` : name}
               depth={depth + 1}
               schema={propSchema}
diff --git a/plugins/config-schema/src/components/SchemaViewer/SchemaViewer.test.tsx b/plugins/config-schema/src/components/SchemaViewer/SchemaViewer.test.tsx
new file mode 100644
index 0000000000..48dc92098a
--- /dev/null
+++ b/plugins/config-schema/src/components/SchemaViewer/SchemaViewer.test.tsx
@@ -0,0 +1,136 @@
+/*
+ * Copyright 2021 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { render, screen } from '@testing-library/react';
+import { Schema } from 'jsonschema';
+import React from 'react';
+import { SchemaViewer } from './SchemaViewer';
+
+describe('SchemaViewer', () => {
+  it('should render a simple schema', () => {
+    const schema = {
+      type: 'object',
+      properties: {
+        a: {
+          description: 'My A',
+          type: 'string',
+        },
+        b: {
+          description: 'My B',
+          type: 'number',
+        },
+      },
+    };
+
+    render(<SchemaViewer schema={schema} />);
+
+    expect(screen.getAllByText('a').length).toBe(2);
+    expect(screen.getByText('My A')).toBeInTheDocument();
+
+    expect(screen.getAllByText('b').length).toBe(2);
+    expect(screen.getByText('My B')).toBeInTheDocument();
+  });
+
+  it('should render complex schema', () => {
+    const schema: Schema = {
+      type: 'object',
+      properties: {
+        a: {
+          description: 'My A',
+          type: 'object',
+          patternProperties: {
+            'prefix.*': {
+              description: 'Prefix prop',
+              type: 'string',
+            },
+          },
+          additionalProperties: {
+            description: 'Additional properties for A',
+            type: 'number',
+            minimum: 72,
+            maximum: 79,
+          },
+        },
+        b: {
+          oneOf: [
+            { type: 'string', description: 'B one of 1' },
+            {
+              type: 'array',
+              description: 'B one of 2',
+              items: {
+                anyOf: [
+                  { type: 'string', description: 'Any of B 1' },
+                  { type: 'number', description: 'Any of B 2' },
+                  {
+                    type: 'object',
+                    description: 'Any of B 3',
+                    properties: {
+                      deep: {
+                        allOf: [
+                          {
+                            type: 'number',
+                            description: 'Impossible 1',
+                          },
+                          {
+                            type: 'boolean',
+                            description: 'Impossible 2',
+                          },
+                        ],
+                      },
+                    },
+                  },
+                ],
+              },
+            },
+          ],
+        },
+      },
+    };
+
+    render(<SchemaViewer schema={schema} />);
+
+    expect(screen.getAllByText('a').length).toBe(2);
+    expect(screen.getByText('My A')).toBeInTheDocument();
+    expect(screen.getByText('a.<prefix.*>')).toBeInTheDocument();
+    expect(screen.getByText('Prefix prop')).toBeInTheDocument();
+
+    expect(screen.getByText('a.*')).toBeInTheDocument();
+    expect(screen.getByText('Additional properties for A')).toBeInTheDocument();
+    expect(screen.getByText('72')).toBeInTheDocument();
+    expect(screen.getByText('79')).toBeInTheDocument();
+
+    expect(screen.getAllByText('b').length).toBe(2);
+    expect(screen.getByText('b/1')).toBeInTheDocument();
+    expect(screen.getByText('B one of 1')).toBeInTheDocument();
+
+    expect(screen.getByText('b/2')).toBeInTheDocument();
+    expect(screen.getByText('B one of 2')).toBeInTheDocument();
+
+    expect(screen.getByText('b/2[]')).toBeInTheDocument();
+    expect(screen.getByText('b/2[]/1')).toBeInTheDocument();
+    expect(screen.getByText('Any of B 1')).toBeInTheDocument();
+    expect(screen.getByText('b/2[]/2')).toBeInTheDocument();
+    expect(screen.getByText('Any of B 2')).toBeInTheDocument();
+    expect(screen.getByText('b/2[]/3')).toBeInTheDocument();
+    expect(screen.getByText('Any of B 3')).toBeInTheDocument();
+
+    expect(screen.getByText('b/2[]/3.deep')).toBeInTheDocument();
+    expect(screen.getByText('b/2[]/3.deep/1')).toBeInTheDocument();
+    expect(screen.getByText('Impossible 1')).toBeInTheDocument();
+    expect(screen.getByText('b/2[]/3.deep/2')).toBeInTheDocument();
+    expect(screen.getByText('Impossible 2')).toBeInTheDocument();
+  });
+});