diff --git a/patchoat/patchoat.cc b/patchoat/patchoat.cc
index d836532..7e4ce91 100644
--- a/patchoat/patchoat.cc
+++ b/patchoat/patchoat.cc
@@ -547,6 +547,9 @@
 
 void PatchOat::PatchClassTable(const ImageHeader* image_header) {
   const auto& section = image_header->GetImageSection(ImageHeader::kSectionClassTable);
+  if (section.Size() == 0) {
+    return;
+  }
   // Note that we require that ReadFromMemory does not make an internal copy of the elements.
   // This also relies on visit roots not doing any verification which could fail after we update
   // the roots to be the image addresses.