diff --git a/constantine/math/pairings/gt_multiexp.nim b/constantine/math/pairings/gt_multiexp.nim
index 71f57d60..c939a8ff 100644
--- a/constantine/math/pairings/gt_multiexp.nim
+++ b/constantine/math/pairings/gt_multiexp.nim
@@ -219,6 +219,7 @@ func multiExp_reference_vartime*[bits: static int, Gt](
     var r_torus {.noInit.}: T2Prj[F]
     multiExp_reference_dispatch_vartime(r_torus, elemsTorus, expos, N)
     r.fromTorus2_vartime(r_torus)
+    elemsTorus.freeHeapAligned()
   else:
     multiExp_reference_dispatch_vartime(r, elems, expos, N)