diff --git a/src/lib/Metadata/Interface.cpp b/src/lib/Metadata/Interface.cpp
index c464eb3ea..0cb3abbf4 100644
--- a/src/lib/Metadata/Interface.cpp
+++ b/src/lib/Metadata/Interface.cpp
@@ -75,7 +75,8 @@ class TrancheBuilder
         std::vector<SymbolID>& M,
         const Info& I)
     {
-        M.emplace_back(I.id);
+        if(std::ranges::find(M, I.id) == M.end())
+            M.emplace_back(I.id);
     }
 
     template<typename ListTy>