diff --git a/unit/solvers/bdd/miniBDD/miniBDD.cpp b/unit/solvers/bdd/miniBDD/miniBDD.cpp
index 18d3d5ede06..71a311e31a9 100644
--- a/unit/solvers/bdd/miniBDD/miniBDD.cpp
+++ b/unit/solvers/bdd/miniBDD/miniBDD.cpp
@@ -126,10 +126,9 @@ class bdd_propt : public propt
     return {};
   }
 
-  literalt lselect(literalt, literalt, literalt) override
+  literalt lselect(literalt c, literalt t, literalt f) override
   {
-    UNREACHABLE;
-    return {};
+    return to_literal((to_bdd(!c) | to_bdd(t)) & (to_bdd(c) | to_bdd(f)));
   }
 
   void lcnf(const bvt &) override