diff --git a/kmir/src/kmir/kdist/mir-semantics/kmir.md b/kmir/src/kmir/kdist/mir-semantics/kmir.md
index 5a2b48c65..b85ee0002 100644
--- a/kmir/src/kmir/kdist/mir-semantics/kmir.md
+++ b/kmir/src/kmir/kdist/mir-semantics/kmir.md
@@ -606,6 +606,11 @@ Therefore a heuristics is used here:
   // unpack tuple and set arguments individually
   rule <k> #setTupleArgs(IDX, Aggregate(variantIdx(0), ARGS)) => #setTupleArgs(IDX, ARGS) ... </k>
 
+  rule <k> #setTupleArgs(IDX, VAL:Value)
+        => #setTupleArgs(IDX, ListItem(VAL))
+        ...
+       </k> [owise]
+
   rule <k> #setTupleArgs(_, .List ) => .K ... </k>
 
   rule <k> #setTupleArgs(IDX, ListItem(VAL) REST:List)
diff --git a/kmir/src/kmir/kdist/mir-semantics/rt/data.md b/kmir/src/kmir/kdist/mir-semantics/rt/data.md
index 840ae6095..bcce7438b 100644
--- a/kmir/src/kmir/kdist/mir-semantics/rt/data.md
+++ b/kmir/src/kmir/kdist/mir-semantics/rt/data.md
@@ -1051,6 +1051,12 @@ Literal arrays are also built using this RValue.
         ...
        </k>
 
+  rule <k> ARGS:List ~> #mkAggregate(aggregateKindClosure(_DEF, _TY_ARGS))
+        =>
+            Aggregate(variantIdx(0), ARGS)
+        ...
+       </k>
+
 
   // #readOperands accumulates a list of `TypedLocal` values from operands
   syntax KItem ::= #readOperands ( Operands )
diff --git a/kmir/src/tests/integration/data/prove-rs/closure-staged.rs b/kmir/src/tests/integration/data/prove-rs/closure-staged.rs
new file mode 100644
index 000000000..98e256256
--- /dev/null
+++ b/kmir/src/tests/integration/data/prove-rs/closure-staged.rs
@@ -0,0 +1,11 @@
+fn apply<F: FnOnce(u8) -> u8>(f: F, v: u8) -> u8 {
+    f(v)
+}
+
+fn main() {
+    let delta: u8 = 1u8;
+    let _captured = |x: u8| x + delta;
+
+    let f = |x: u8| x + 1u8;
+    assert_eq!(apply(f, 41u8), 42u8);
+}