diff --git a/curve25519-dalek/src/backend/serial/scalar_mul/precomputed_straus.rs b/curve25519-dalek/src/backend/serial/scalar_mul/precomputed_straus.rs
index 8c3a474c2..b3fc3e438 100644
--- a/curve25519-dalek/src/backend/serial/scalar_mul/precomputed_straus.rs
+++ b/curve25519-dalek/src/backend/serial/scalar_mul/precomputed_straus.rs
@@ -69,7 +69,7 @@ impl VartimePrecomputedMultiscalarMul for VartimePrecomputedStraus {
     {
         let static_nafs = static_scalars
             .into_iter()
-            .map(|c| c.borrow().non_adjacent_form(5))
+            .map(|c| c.borrow().non_adjacent_form(8))
             .collect::<Vec<_>>();
         let dynamic_nafs: Vec<_> = dynamic_scalars
             .into_iter()
diff --git a/curve25519-dalek/src/backend/vector/scalar_mul/precomputed_straus.rs b/curve25519-dalek/src/backend/vector/scalar_mul/precomputed_straus.rs
index cc44c5795..b0b50e0c2 100644
--- a/curve25519-dalek/src/backend/vector/scalar_mul/precomputed_straus.rs
+++ b/curve25519-dalek/src/backend/vector/scalar_mul/precomputed_straus.rs
@@ -80,7 +80,7 @@ pub mod spec {
         {
             let static_nafs = static_scalars
                 .into_iter()
-                .map(|c| c.borrow().non_adjacent_form(5))
+                .map(|c| c.borrow().non_adjacent_form(8))
                 .collect::<Vec<_>>();
             let dynamic_nafs: Vec<_> = dynamic_scalars
                 .into_iter()