diff --git a/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/event/TimelineItemAspectRatioBox.kt b/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/event/TimelineItemAspectRatioBox.kt
index 7b2e2099d4..48072ce5bf 100644
--- a/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/event/TimelineItemAspectRatioBox.kt
+++ b/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/event/TimelineItemAspectRatioBox.kt
@@ -18,7 +18,7 @@ import androidx.compose.ui.unit.dp
 
 const val MIN_HEIGHT_IN_DP = 100
 const val MAX_HEIGHT_IN_DP = 360
-private const val DEFAULT_ASPECT_RATIO = 1.33f
+const val DEFAULT_ASPECT_RATIO = 1.33f
 
 @Composable
 fun TimelineItemAspectRatioBox(
diff --git a/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/event/TimelineItemImageView.kt b/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/event/TimelineItemImageView.kt
index b876fc3a3f..af401dc56a 100644
--- a/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/event/TimelineItemImageView.kt
+++ b/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/event/TimelineItemImageView.kt
@@ -100,9 +100,10 @@ fun TimelineItemImageView(
                 LocalContentColor provides ElementTheme.colors.textPrimary,
                 LocalTextStyle provides ElementTheme.typography.fontBodyLgRegular
             ) {
+                val aspectRatio = content.aspectRatio ?: DEFAULT_ASPECT_RATIO
                 EditorStyledText(
                     modifier = Modifier
-                        .widthIn(min = MIN_HEIGHT_IN_DP.dp * content.aspectRatio!!, max = MAX_HEIGHT_IN_DP.dp * content.aspectRatio),
+                        .widthIn(min = MIN_HEIGHT_IN_DP.dp * aspectRatio, max = MAX_HEIGHT_IN_DP.dp * aspectRatio),
                     text = caption,
                     style = ElementRichTextEditorStyle.textStyle(),
                     releaseOnDetach = false,
@@ -136,5 +137,16 @@ internal fun TimelineImageWithCaptionRowPreview() = ElementPreview {
                 ),
             )
         }
+        ATimelineItemEventRow(
+            event = aTimelineItemEvent(
+                isMine = false,
+                content = aTimelineItemImageContent().copy(
+                    filename = "image.jpg",
+                    body = "Image with null aspectRatio",
+                    aspectRatio = null,
+                ),
+                groupPosition = TimelineItemGroupPosition.Last,
+            ),
+        )
     }
 }
diff --git a/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/event/TimelineItemStickerView.kt b/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/event/TimelineItemStickerView.kt
index 684e3ea54a..f895eddc85 100644
--- a/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/event/TimelineItemStickerView.kt
+++ b/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/event/TimelineItemStickerView.kt
@@ -23,18 +23,17 @@ import io.element.android.libraries.designsystem.preview.PreviewsDayNight
 import io.element.android.libraries.matrix.ui.media.MediaRequestData
 
 private const val STICKER_SIZE_IN_DP = 128
-private const val DEFAULT_ASPECT_RATIO = 1.33f
 
 @Composable
 fun TimelineItemStickerView(
     content: TimelineItemStickerContent,
     modifier: Modifier = Modifier,
 ) {
-    val safeAspectRatio = content.aspectRatio ?: DEFAULT_ASPECT_RATIO
+    val aspectRatio = content.aspectRatio ?: DEFAULT_ASPECT_RATIO
     Box(
         modifier = modifier
             .heightIn(min = STICKER_SIZE_IN_DP.dp, max = STICKER_SIZE_IN_DP.dp)
-            .aspectRatio(safeAspectRatio, false),
+            .aspectRatio(aspectRatio, false),
         contentAlignment = Alignment.TopStart,
     ) {
         BlurHashAsyncImage(
diff --git a/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/event/TimelineItemVideoView.kt b/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/event/TimelineItemVideoView.kt
index a571403e40..31cb5f1607 100644
--- a/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/event/TimelineItemVideoView.kt
+++ b/features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/timeline/components/event/TimelineItemVideoView.kt
@@ -72,7 +72,9 @@ fun TimelineItemVideoView(
         modifier = modifier.semantics { contentDescription = description }
     ) {
         val containerModifier = if (content.showCaption) {
-            Modifier.padding(top = 6.dp).clip(RoundedCornerShape(6.dp))
+            Modifier
+                .padding(top = 6.dp)
+                .clip(RoundedCornerShape(6.dp))
         } else {
             Modifier
         }
@@ -116,9 +118,10 @@ fun TimelineItemVideoView(
                 LocalContentColor provides ElementTheme.colors.textPrimary,
                 LocalTextStyle provides ElementTheme.typography.fontBodyLgRegular,
             ) {
+                val aspectRatio = content.aspectRatio ?: DEFAULT_ASPECT_RATIO
                 EditorStyledText(
                     modifier = Modifier
-                        .widthIn(min = MIN_HEIGHT_IN_DP.dp * content.aspectRatio!!, max = MAX_HEIGHT_IN_DP.dp * content.aspectRatio),
+                        .widthIn(min = MIN_HEIGHT_IN_DP.dp * aspectRatio, max = MAX_HEIGHT_IN_DP.dp * aspectRatio),
                     text = caption,
                     style = ElementRichTextEditorStyle.textStyle(),
                     releaseOnDetach = false,
@@ -152,5 +155,16 @@ internal fun TimelineVideoWithCaptionRowPreview() = ElementPreview {
                 ),
             )
         }
+        ATimelineItemEventRow(
+            event = aTimelineItemEvent(
+                isMine = false,
+                content = aTimelineItemVideoContent().copy(
+                    filename = "video.mp4",
+                    body = "Video with null aspect ratio",
+                    aspectRatio = null,
+                ),
+                groupPosition = TimelineItemGroupPosition.Last,
+            ),
+        )
     }
 }