diff --git a/cpu-constraint-poly/sources/cpu_constraint_poly.move b/cpu-constraint-poly/sources/cpu_constraint_poly.move
index 822ae75..38359a2 100644
--- a/cpu-constraint-poly/sources/cpu_constraint_poly.move
+++ b/cpu-constraint-poly/sources/cpu_constraint_poly.move
@@ -11,7 +11,7 @@ module cpu_constraint_poly_addr::cpu_constraint_poly {
     const K_MODULUS: u256 = 0x800000000000011000000000000000000000000000000000000000000000001;
     // End of generating constants!
 
-    const CTX_LEN: u256 = 404;
+    const CTX_LEN: u64 = 404;
 
     // The Memory map during the execution of this contract is as follows:
     // [0x0, 0x20) - pedersen__points__x