diff --git a/src/policy/concrete.rs b/src/policy/concrete.rs
index d696b53a..97ff05f6 100644
--- a/src/policy/concrete.rs
+++ b/src/policy/concrete.rs
@@ -662,6 +662,7 @@ impl<Pk: MiniscriptKey> ForEachKey<Pk> for Policy<Pk> {
     where
         Pk: 'a,
     {
+        let mut pred = |x| pred(x);
         match *self {
             Policy::Unsatisfiable | Policy::Trivial => true,
             Policy::Key(ref pk) => pred(pk),
diff --git a/src/policy/semantic.rs b/src/policy/semantic.rs
index cd6080fe..1dbb30a9 100644
--- a/src/policy/semantic.rs
+++ b/src/policy/semantic.rs
@@ -64,6 +64,7 @@ impl<Pk: MiniscriptKey> ForEachKey<Pk> for Policy<Pk> {
     where
         Pk: 'a,
     {
+        let mut pred = |x| pred(x);
         match *self {
             Policy::Unsatisfiable | Policy::Trivial => true,
             Policy::Key(ref _pkh) => todo!("Semantic Policy KeyHash must store Pk"),