diff --git a/NEWS b/NEWS
index a1e2361f5..3b94d43ab 100644
--- a/NEWS
+++ b/NEWS
@@ -113,6 +113,13 @@ New in spot 2.10.6.dev  (not yet released)
     to obtain a simple model checker (that returns true or false,
     without counterexample).
 
+  Bugs fixed:
+
+  - calling twa_graph::new_univ_edge(src, begin, end, cond, acc) could
+    produce unexpected result if begin and end where already pointing
+    into the universal edge vector, since the later can be
+    reallocated during that process.
+
 New in spot 2.10.6  (2022-05-18)
 
   Bugs fixed:
diff --git a/spot/graph/graph.hh b/spot/graph/graph.hh
index 6419fc27a..06ddf0997 100644
--- a/spot/graph/graph.hh
+++ b/spot/graph/graph.hh
@@ -804,8 +804,23 @@ namespace spot
         return *dst_begin;
       SPOT_ASSERT(sz > 1);
       unsigned d = dests_.size();
-      dests_.emplace_back(sz);
-      dests_.insert(dests_.end(), dst_begin, dst_end);
+      if (!dests_.empty()
+          && &*dst_begin >= &dests_.front()
+          && &*dst_begin <= &dests_.back()
+          && (dests_.capacity() - dests_.size()) < (sz + 1))
+        {
+          // If dst_begin...dst_end points into dests_ and dests_ risk
+          // being reallocated, we have to savea the destination
+          // states before we lose them.
+          std::vector<unsigned> tmp(dst_begin, dst_end);
+          dests_.emplace_back(sz);
+          dests_.insert(dests_.end(), tmp.begin(), tmp.end());
+        }
+      else
+        {
+          dests_.emplace_back(sz);
+          dests_.insert(dests_.end(), dst_begin, dst_end);
+        }
       return ~d;
     }