diff --git a/src/multiproof/multiproof.zig b/src/multiproof/multiproof.zig
index 54f6dbb..9366b77 100644
--- a/src/multiproof/multiproof.zig
+++ b/src/multiproof/multiproof.zig
@@ -206,7 +206,7 @@ pub const MultiProof = struct {
             E_coefficients[i] = Fr.mul(powers_of_r[i], helper_scalar_den[queries[i].z]);
         }
         // TODO: make the window size be dynamically calculated.
-        const E = try pippenger.Pippenger(11).msm(allocator, Cs, E_coefficients);
+        const E = try pippenger.Pippenger(8).msm(allocator, Cs, E_coefficients);
         transcript.appendPoint(E, "E");
 
         // Check IPA proof.