diff --git a/qrenderdoc/Windows/BufferViewer.cpp b/qrenderdoc/Windows/BufferViewer.cpp
index 212d1a6f3..12f25e43f 100644
--- a/qrenderdoc/Windows/BufferViewer.cpp
+++ b/qrenderdoc/Windows/BufferViewer.cpp
@@ -3862,8 +3862,8 @@ void BufferViewer::processFormat(const QString &format)
   byteRangeStart->setSingleStep(stride);
   byteRangeLength->setSingleStep(stride);
 
-  byteRangeStart->setMaximum(m_ObjectByteSize);
-  byteRangeLength->setMaximum(m_ObjectByteSize);
+  byteRangeStart->setMaximum((qulonglong)m_ObjectByteSize);
+  byteRangeLength->setMaximum((qulonglong)m_ObjectByteSize);
 
   byteRangeStart->setValue(m_ByteOffset);
   byteRangeLength->setValue(m_ByteSize);