diff --git a/src/zip.cpp b/src/zip.cpp
index d997cda..8139673 100644
--- a/src/zip.cpp
+++ b/src/zip.cpp
@@ -182,7 +182,15 @@ std::vector<std::string> list_spine(const fs::path &filepath)
         if (result)
         {
             auto manifest{xml.child("package").child("manifest")};
+            if (manifest == nullptr)
+            {
+                manifest = xml.child("opf:package").child("opf:manifest");
+            }
             auto spine{xml.child("package").child("spine")};
+            if (spine == nullptr)
+            {
+                spine = xml.child("opf:package").child("opf:spine");
+            }
 
             for (const auto &itemref : spine)
             {