diff --git a/features/call/impl/src/main/kotlin/io/element/android/features/call/impl/utils/ActiveCallManager.kt b/features/call/impl/src/main/kotlin/io/element/android/features/call/impl/utils/ActiveCallManager.kt
index 59e19d3fe2..8804a91f79 100644
--- a/features/call/impl/src/main/kotlin/io/element/android/features/call/impl/utils/ActiveCallManager.kt
+++ b/features/call/impl/src/main/kotlin/io/element/android/features/call/impl/utils/ActiveCallManager.kt
@@ -13,6 +13,8 @@ import android.os.PowerManager
 import androidx.annotation.VisibleForTesting
 import androidx.core.app.NotificationManagerCompat
 import androidx.core.content.getSystemService
+import coil3.SingletonImageLoader
+import coil3.annotation.DelicateCoilApi
 import com.squareup.anvil.annotations.ContributesBinding
 import io.element.android.appconfig.ElementCallConfig
 import io.element.android.features.call.api.CallType
@@ -23,6 +25,8 @@ import io.element.android.libraries.di.AppScope
 import io.element.android.libraries.di.ApplicationContext
 import io.element.android.libraries.di.SingleIn
 import io.element.android.libraries.matrix.api.MatrixClientProvider
+import io.element.android.libraries.matrix.api.core.SessionId
+import io.element.android.libraries.matrix.ui.media.ImageLoaderHolder
 import io.element.android.libraries.push.api.notifications.ForegroundServiceType
 import io.element.android.libraries.push.api.notifications.NotificationIdProvider
 import io.element.android.libraries.push.api.notifications.OnMissedCallNotificationHandler
@@ -89,6 +93,7 @@ class DefaultActiveCallManager @Inject constructor(
     private val matrixClientProvider: MatrixClientProvider,
     private val defaultCurrentCallService: DefaultCurrentCallService,
     private val appForegroundStateService: AppForegroundStateService,
+    private val imageLoaderHolder: ImageLoaderHolder,
 ) : ActiveCallManager {
     private val tag = "DefaultActiveCallManager"
     private var timedOutCallJob: Job? = null
@@ -125,6 +130,7 @@ class DefaultActiveCallManager @Inject constructor(
             )
 
             timedOutCallJob = coroutineScope.launch {
+                setUpCoil(notificationData.sessionId)
                 showIncomingCallNotification(notificationData)
 
                 // Wait for the ringing call to time out
@@ -140,6 +146,13 @@ class DefaultActiveCallManager @Inject constructor(
         }
     }
 
+    @OptIn(DelicateCoilApi::class)
+    private suspend fun setUpCoil(sessionId: SessionId) {
+        val matrixClient = matrixClientProvider.getOrRestore(sessionId).getOrNull() ?: return
+        // Ensure that the image loader is set, else the IncomingCallActivity will not be able to render the caller avatar
+        SingletonImageLoader.setUnsafe(imageLoaderHolder.get(matrixClient))
+    }
+
     /**
      * Called when the incoming call timed out. It will remove the active call and remove any associated UI, adding a 'missed call' notification.
      */
diff --git a/features/call/impl/src/test/kotlin/io/element/android/features/call/utils/DefaultActiveCallManagerTest.kt b/features/call/impl/src/test/kotlin/io/element/android/features/call/utils/DefaultActiveCallManagerTest.kt
index 5f7309344a..2059e9836e 100644
--- a/features/call/impl/src/test/kotlin/io/element/android/features/call/utils/DefaultActiveCallManagerTest.kt
+++ b/features/call/impl/src/test/kotlin/io/element/android/features/call/utils/DefaultActiveCallManagerTest.kt
@@ -325,5 +325,6 @@ class DefaultActiveCallManagerTest {
         matrixClientProvider = matrixClientProvider,
         defaultCurrentCallService = DefaultCurrentCallService(),
         appForegroundStateService = FakeAppForegroundStateService(),
+        imageLoaderHolder = FakeImageLoaderHolder(),
     )
 }
diff --git a/libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/background/OnboardingBackground.kt b/libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/background/OnboardingBackground.kt
index 8ea58deb40..b4830e0904 100644
--- a/libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/background/OnboardingBackground.kt
+++ b/libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/background/OnboardingBackground.kt
@@ -8,6 +8,7 @@
 package io.element.android.libraries.designsystem.background
 
 import androidx.compose.foundation.Canvas
+import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
@@ -32,13 +33,17 @@ import io.element.android.libraries.designsystem.preview.PreviewsDayNight
 @Suppress("ModifierMissing")
 @Composable
 fun OnboardingBackground() {
-    Box(modifier = Modifier.fillMaxSize()) {
+    Box(
+        modifier = Modifier
+            .fillMaxSize()
+            .background(ElementTheme.colors.bgCanvasDefault)
+    ) {
         val isLightTheme = ElementTheme.isLightTheme
         Canvas(
             modifier = Modifier
-            .fillMaxWidth()
-            .height(220.dp)
-            .align(Alignment.BottomCenter)
+                .fillMaxWidth()
+                .height(220.dp)
+                .align(Alignment.BottomCenter)
         ) {
             val gradientBrush = ShaderBrush(
                 LinearGradientShader(