diff --git a/app/src/main/java/org/thoughtcrime/securesms/components/transfercontrols/TransferControlView.kt b/app/src/main/java/org/thoughtcrime/securesms/components/transfercontrols/TransferControlView.kt
index 3e24a667a2..eb062476dc 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/components/transfercontrols/TransferControlView.kt
+++ b/app/src/main/java/org/thoughtcrime/securesms/components/transfercontrols/TransferControlView.kt
@@ -239,7 +239,7 @@ class TransferControlView @JvmOverloads constructor(context: Context, attrs: Att
     val remainingSlides = currentState.slides.filterNot { it.transferState == AttachmentTable.TRANSFER_PROGRESS_DONE }
     val downloadCount = remainingSlides.size
     binding.primaryDetailsText.text = context.resources.getQuantityString(R.plurals.TransferControlView_n_items, downloadCount, downloadCount)
-    val byteCount = remainingSlides.sumOf { it.asAttachment().size }
+    val byteCount = currentState.networkProgress.sumTotal() - currentState.networkProgress.sumCompleted()
     binding.secondaryDetailsText.text = Formatter.formatShortFileSize(context, byteCount)
   }
 
@@ -264,7 +264,7 @@ class TransferControlView @JvmOverloads constructor(context: Context, attrs: Att
     } else {
       ViewUtil.dpToPx(SECONDARY_TEXT_OFFSET_DP).toFloat()
     }
-    val byteCount = currentState.slides.sumOf { it.asAttachment().size }
+    val byteCount = currentState.networkProgress.sumTotal() - currentState.networkProgress.sumCompleted()
     binding.secondaryDetailsText.text = Formatter.formatShortFileSize(context, byteCount)
   }
 
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index f087dd1de8..203e2983fd 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -2419,7 +2419,7 @@
     </plurals>
     <!-- Status update label used while the device is transcoding video as a prerequisite to uploading -->
     <string name="TransferControlView__processing">Processing…</string>
-    <!-- Status update label used while the device is transcoding video as a prerequisite to uploading -->
+    <!-- Status update label used while the device is transmitting data over the network. Will take the form of "123 KB/2.0 MB" -->
     <string name="TransferControlView__download_progress">%1$s/%2$s</string>