Fix a bug when we didn't call isNaN function and assumed it's a property

1 files changed, 1 insertions, 1 deletions

diff --git a/packages/utils/src/abi_encoder/utils/math.ts b/packages/utils/src/abi_encoder/utils/math.ts
index dd45ea05c..a2a79e2a8 100644
--- a/packages/utils/src/abi_encoder/utils/math.ts
+++ b/packages/utils/src/abi_encoder/utils/math.ts
@@ -14,7 +14,7 @@ function sanityCheckBigNumberRange(
         throw new Error(`Tried to assign value of ${value}, which exceeds max value of ${maxValue}`);
     } else if (value.isLessThan(minValue)) {
         throw new Error(`Tried to assign value of ${value}, which exceeds min value of ${minValue}`);
-    } else if (value.isNaN) {
+    } else if (value.isNaN()) {
         throw new Error(`Tried to assign NaN value`);
     }
 }