diff --git a/app/render/backend/audiorenderworker.cpp b/app/render/backend/audiorenderworker.cpp
index 2a0dcd0db..f6c45c15c 100644
--- a/app/render/backend/audiorenderworker.cpp
+++ b/app/render/backend/audiorenderworker.cpp
@@ -47,11 +47,9 @@ NodeValueTable AudioRenderWorker::RenderBlock(const TrackOutput *track, const Ti
     TimeRange range_for_block(qMax(b->in(), range.in()),
                               qMin(b->out(), range.out()));
 
+    // Destination buffer
     NodeValueTable table = ProcessNode(NodeDependency(b, range_for_block));
-
     QByteArray samples_from_this_block = table.Take(NodeParam::kSamples).toByteArray();
-    int destination_offset = audio_params_.time_to_bytes(range_for_block.in() - range.in());
-    int maximum_copy_size = audio_params_.time_to_bytes(range_for_block.length());
 
     if (!samples_from_this_block.isEmpty()) {
       // Stretch samples here
@@ -80,11 +78,23 @@ NodeValueTable AudioRenderWorker::RenderBlock(const TrackOutput *track, const Ti
         AudioManager::ReverseBuffer(samples_from_this_block.data(), samples_from_this_block.size(), audio_params_.samples_to_bytes(1));
       }
 
-      int actual_copy_size = qMin(maximum_copy_size, samples_from_this_block.size());
+      int destination_offset = audio_params_.time_to_bytes(range_for_block.in() - range.in());
+      int actual_copy_size = qMin(audio_params_.time_to_bytes(range_for_block.length()), samples_from_this_block.size());
 
-      memcpy(block_range_buffer.data()+destination_offset,
-             samples_from_this_block.data(),
-             actual_copy_size);
+      if (destination_offset < 0
+          || destination_offset + actual_copy_size < 0
+          || destination_offset >= block_range_buffer.size()
+          || destination_offset + actual_copy_size >= block_range_buffer.size()) {
+        qCritical() << "Tried to copy audio beyond the size of the destination buffer";
+        qCritical() << "  Destination size:" << block_range_buffer.size();
+        qCritical() << "  Destination offset:" << destination_offset;
+        qCritical() << "  Copy size:" << actual_copy_size;
+        abort();
+      } else {
+        memcpy(block_range_buffer.data()+destination_offset,
+               samples_from_this_block.data(),
+               actual_copy_size);
+      }
     }
 
     NodeValueTable::Merge({merged_table, table});