diff --git a/src/utils/getConfigByFilePath.js b/src/utils/getConfigByFilePath.js
index 41b43101..caf9d17c 100644
--- a/src/utils/getConfigByFilePath.js
+++ b/src/utils/getConfigByFilePath.js
@@ -117,6 +117,16 @@ export async function readFileConfig(config) {
       }
     }
 
+    /**
+     * Override the `content` key in `baseConfig` with the one in `envConfig`.
+     *
+     * This is done so that each build uses its own `content` paths, in
+     * order to avoid compiling unnecessary files.
+     */
+    if (Array.isArray(envConfig.content)) {
+      baseConfig.content = []
+    }
+
     return merge(envConfig, baseConfig)
   } catch (error) {
     throw new Error('Could not compute config')
diff --git a/test/config.test.js b/test/config.test.js
index 0a9122a9..3e724126 100644
--- a/test/config.test.js
+++ b/test/config.test.js
@@ -36,4 +36,13 @@ describe.concurrent('Config', () => {
       .toHaveProperty('local', true)
       .toHaveProperty('foo', 'bar')
   })
+
+  test('Overrides `content` in base config', async () => {
+    const config = await readFileConfig({ env: 'maizzle-ci', content: 'foo' })
+
+    expect(config)
+      .toHaveProperty('env', 'maizzle-ci')
+      .toHaveProperty('local', true)
+      .toHaveProperty('content', ['maizzle-ci'])
+  })
 })
diff --git a/test/stubs/config/maizzle.config.local.js b/test/stubs/config/maizzle.config.local.js
index cc24bc4c..f31b4c45 100644
--- a/test/stubs/config/maizzle.config.local.js
+++ b/test/stubs/config/maizzle.config.local.js
@@ -1,3 +1,4 @@
 export default {
-  local: true
+  local: true,
+  content: ['local'],
 }
diff --git a/test/stubs/config/maizzle.config.maizzle-ci.js b/test/stubs/config/maizzle.config.maizzle-ci.js
index 92b33d29..96c6e6a4 100644
--- a/test/stubs/config/maizzle.config.maizzle-ci.js
+++ b/test/stubs/config/maizzle.config.maizzle-ci.js
@@ -1,3 +1,4 @@
 export default {
-  foo: 'bar'
+  foo: 'bar',
+  content: ['maizzle-ci'],
 }