diff --git a/docs/systemuicontroller.md b/docs/systemuicontroller.md
index b6a278da6..9c891f3cc 100644
--- a/docs/systemuicontroller.md
+++ b/docs/systemuicontroller.md
@@ -12,9 +12,9 @@ In your layouts you can update the system bar colors like so:
 ``` kotlin
 // Remember a SystemUiController
 val systemUiController = rememberSystemUiController()
-val useDarkIcons = MaterialTheme.colors.isLight
+val useDarkIcons = !isSystemInDarkTheme()
 
-SideEffect {
+DisposableEffect(systemUiController, useDarkIcons) {
     // Update all of the system bar colors to be transparent, and use
     // dark icons if we're in light theme
     systemUiController.setSystemBarsColor(
@@ -23,6 +23,8 @@ SideEffect {
     )
 
     // setStatusBarColor() and setNavigationBarColor() also exist
+
+    onDispose {}
 }
 ```
 
diff --git a/sample/src/main/java/com/google/accompanist/sample/systemuicontroller/DocsSamples.kt b/sample/src/main/java/com/google/accompanist/sample/systemuicontroller/DocsSamples.kt
index 2da9523ed..ad51f9c5b 100644
--- a/sample/src/main/java/com/google/accompanist/sample/systemuicontroller/DocsSamples.kt
+++ b/sample/src/main/java/com/google/accompanist/sample/systemuicontroller/DocsSamples.kt
@@ -16,19 +16,19 @@
 
 package com.google.accompanist.sample.systemuicontroller
 
-import androidx.compose.material.MaterialTheme
+import androidx.compose.foundation.isSystemInDarkTheme
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.SideEffect
+import androidx.compose.runtime.DisposableEffect
 import androidx.compose.ui.graphics.Color
 import com.google.accompanist.systemuicontroller.rememberSystemUiController
 
 @Composable
 fun SystemUiControllerSample() {
-    // Get the current SystemUiController
+    // Remember a SystemUiController
     val systemUiController = rememberSystemUiController()
-    val useDarkIcons = MaterialTheme.colors.isLight
+    val useDarkIcons = !isSystemInDarkTheme()
 
-    SideEffect {
+    DisposableEffect(systemUiController, useDarkIcons) {
         // Update all of the system bar colors to be transparent, and use
         // dark icons if we're in light theme
         systemUiController.setSystemBarsColor(
@@ -37,5 +37,6 @@ fun SystemUiControllerSample() {
         )
 
         // setStatusBarColor() and setNavigationBarColor() also exist
+        onDispose {}
     }
 }