diff --git a/apps/maestro/src/features/InterchainTokenDeployment/InterchainTokenDeployment.state.ts b/apps/maestro/src/features/InterchainTokenDeployment/InterchainTokenDeployment.state.ts
index e3d9d18d1..e71721501 100644
--- a/apps/maestro/src/features/InterchainTokenDeployment/InterchainTokenDeployment.state.ts
+++ b/apps/maestro/src/features/InterchainTokenDeployment/InterchainTokenDeployment.state.ts
@@ -7,7 +7,7 @@ import { zodResolver } from "@hookform/resolvers/zod";
 import { uniq, without } from "rambda";
 import { z } from "zod";
 
-import { useAccount } from "~/lib/hooks";
+import { SUI_CHAIN_ID, useAccount, useChainId } from "~/lib/hooks";
 import { logger } from "~/lib/logger";
 import {
   hex64Literal,
@@ -26,6 +26,7 @@ const TOKEN_DETAILS_FORM_SCHEMA = z.object({
 });
 
 export type TokenDetailsFormState = z.infer<typeof TOKEN_DETAILS_FORM_SCHEMA>;
+const MAX_UINT64 = BigInt(2) ** BigInt(64) - BigInt(1);
 
 export type DeployAndRegisterTransactionState =
   | {
@@ -86,6 +87,7 @@ function useInterchainTokenDeploymentState(
   });
 
   const { address } = useAccount();
+  const chainId = useChainId();
 
   /**
    * Generate a random salt on first render
@@ -97,6 +99,10 @@ function useInterchainTokenDeploymentState(
       const salt = generateRandomHash();
 
       tokenDetailsForm.setValue("salt", salt);
+
+      if (chainId === SUI_CHAIN_ID) {
+        tokenDetailsForm.setValue("tokenDecimals", 9);
+      }
     },
     // eslint-disable-next-line react-hooks/exhaustive-deps
     [address]
@@ -147,6 +153,10 @@ function useInterchainTokenDeploymentState(
           // reset form
           tokenDetailsForm.reset(initialState.tokenDetails);
 
+          if (chainId === SUI_CHAIN_ID) {
+            tokenDetailsForm.setValue("tokenDecimals", 9);
+          }
+
           tokenDetailsForm.setValue("salt", generateRandomHash());
           // tokenDetailsForm.setValue("minter", address);
         });
diff --git a/apps/maestro/src/features/InterchainTokenDeployment/steps/token-details/TokenDetails.tsx b/apps/maestro/src/features/InterchainTokenDeployment/steps/token-details/TokenDetails.tsx
index 5290ba219..a1dcc815a 100644
--- a/apps/maestro/src/features/InterchainTokenDeployment/steps/token-details/TokenDetails.tsx
+++ b/apps/maestro/src/features/InterchainTokenDeployment/steps/token-details/TokenDetails.tsx
@@ -17,6 +17,7 @@ import {
   useInterchainTokenDeploymentStateContainer,
   type TokenDetailsFormState,
 } from "~/features/InterchainTokenDeployment";
+import { SUI_CHAIN_ID, useChainId } from "~/lib/hooks";
 import {
   isValidEVMAddress,
   preventNonHexInput,
@@ -29,8 +30,11 @@ import {
   ValidationError,
 } from "~/ui/compounds/MultiStepForm";
 
+const MAX_UINT64 = BigInt(2) ** BigInt(64) - BigInt(1);
+
 const TokenDetails: FC = () => {
   const { state, actions } = useInterchainTokenDeploymentStateContainer();
+  const chainId = useChainId();
 
   const { register, handleSubmit, formState, watch } = state.tokenDetailsForm;
 
@@ -40,6 +44,7 @@ const TokenDetails: FC = () => {
   const isMintable = watch("isMintable");
   const minter = watch("minter");
   const supply = watch("initialSupply");
+  const tokenDecimals = watch("tokenDecimals");
 
   const minterErrorMessage = useMemo<FieldError | undefined>(() => {
     if (!isMintable) {
@@ -72,7 +77,18 @@ const TokenDetails: FC = () => {
         message: "Fixed supply token requires an initial balance",
       };
     }
-  }, [isMintable, minter, supply]);
+
+    if (
+      chainId === SUI_CHAIN_ID &&
+      supply &&
+      BigInt(supply) * BigInt(10) ** BigInt(tokenDecimals) > MAX_UINT64
+    ) {
+      return {
+        type: "validate",
+        message: "Supply must be less than 2^64 - 1 for Sui",
+      };
+    }
+  }, [isMintable, minter, supply, chainId, tokenDecimals]);
 
   const isFormValid = useMemo(() => {
     if (minterErrorMessage || initialSupplyErrorMessage) {
diff --git a/apps/maestro/src/lib/hooks/useChainId.ts b/apps/maestro/src/lib/hooks/useChainId.ts
index 504413e4e..d281152fb 100644
--- a/apps/maestro/src/lib/hooks/useChainId.ts
+++ b/apps/maestro/src/lib/hooks/useChainId.ts
@@ -6,7 +6,7 @@ import { useChainId as useWagmiChainId } from "wagmi";
 // Sui's chain ID
 import { NEXT_PUBLIC_NETWORK_ENV } from "~/config/env";
 
-const SUI_CHAIN_ID = NEXT_PUBLIC_NETWORK_ENV === "mainnet" ? 101 : 103;
+export const SUI_CHAIN_ID = NEXT_PUBLIC_NETWORK_ENV === "mainnet" ? 101 : 103;
 
 // TODO: check if this is the best way to use chain ids, maybe we should combine it with chain type
 export function useChainId(): number {