diff --git a/components/DeployEditor.tsx b/components/DeployEditor.tsx
index e891c25..d387a20 100644
--- a/components/DeployEditor.tsx
+++ b/components/DeployEditor.tsx
@@ -34,7 +34,9 @@ const DeployEditor = () => {
 
   const [showContent, setShowContent] = useState(false);
 
-  const activeFile = snap.files[snap.active];
+  const activeFile = snap.files[snap.active]?.compiledContent
+    ? snap.files[snap.active]
+    : snap.files.filter((file) => file.compiledContent)[0];
   const compiledSize = activeFile?.compiledContent?.byteLength || 0;
   const color =
     compiledSize > FILESIZE_BREAKPOINTS[1]
@@ -60,12 +62,21 @@ const DeployEditor = () => {
         {activeFile?.lastCompiled && (
           <ReactTimeAgo date={activeFile.lastCompiled} locale="en-US" />
         )}
+
         {activeFile.compiledContent?.byteLength && (
           <Text css={{ ml: "$2", color }}>
             ({filesize(activeFile.compiledContent.byteLength)})
           </Text>
         )}
       </Flex>
+      {activeFile.compiledContent?.byteLength &&
+        activeFile.compiledContent?.byteLength >= 64000 && (
+          <Flex css={{ flexDirection: "column", py: "$3", pb: "$1" }}>
+            <Text css={{ ml: "$2", color: "$error" }}>
+              File size is larger than 64kB, cannot set hook!
+            </Text>
+          </Flex>
+        )}
       <Button variant="link" onClick={() => setShowContent(true)}>
         View as WAT-file
       </Button>
@@ -119,8 +130,8 @@ const DeployEditor = () => {
             className="hooks-editor"
             defaultLanguage={"wat"}
             language={"wat"}
-            path={`file://tmp/c/${snap.files?.[snap.active]?.name}.wat`}
-            value={snap.files?.[snap.active]?.compiledWatContent || ""}
+            path={`file://tmp/c/${activeFile?.name}.wat`}
+            value={activeFile?.compiledWatContent || ""}
             beforeMount={(monaco) => {
               monaco.languages.register({ id: "wat" });
               monaco.languages.setLanguageConfiguration("wat", wat.config);
diff --git a/components/SetHookDialog.tsx b/components/SetHookDialog.tsx
index bdaf04c..263cafa 100644
--- a/components/SetHookDialog.tsx
+++ b/components/SetHookDialog.tsx
@@ -140,6 +140,16 @@ export const SetHookDialog: React.FC<{ accountAddress: string }> = React.memo(
       return null;
     }
 
+    const tooLargeFile = () => {
+      const activeFile = snap.files[snap.active].compiledContent
+        ? snap.files[snap.active]
+        : snap.files.filter((file) => file.compiledContent)[0];
+      return Boolean(
+        activeFile?.compiledContent?.byteLength &&
+          activeFile?.compiledContent?.byteLength >= 64000
+      );
+    };
+
     const onSubmit: SubmitHandler<SetHookData> = async (data) => {
       const currAccount = state.accounts.find(
         (acc) => acc.address === account.address
@@ -164,7 +174,8 @@ export const SetHookDialog: React.FC<{ accountAddress: string }> = React.memo(
             variant={"secondary"}
             disabled={
               account.isLoading ||
-              !snap.files.filter((file) => file.compiledWatContent).length
+              !snap.files.filter((file) => file.compiledWatContent).length ||
+              tooLargeFile()
             }
           >
             Set Hook
diff --git a/state/actions/deployHook.tsx b/state/actions/deployHook.tsx
index b1eaaf8..fd8d276 100644
--- a/state/actions/deployHook.tsx
+++ b/state/actions/deployHook.tsx
@@ -54,15 +54,15 @@ export const prepareDeployHookTx = async (
   account: IAccount & { name?: string },
   data: SetHookData
 ) => {
-  if (
-    !state.files ||
-    state.files.length === 0 ||
-    !state.files?.[state.active]?.compiledContent
-  ) {
+  const activeFile = state.files[state.active]?.compiledContent
+    ? state.files[state.active]
+    : state.files.filter((file) => file.compiledContent)[0];
+
+  if (!state.files || state.files.length === 0) {
     return;
   }
 
-  if (!state.files?.[state.active]?.compiledContent) {
+  if (!activeFile?.compiledContent) {
     return;
   }
   if (!state.client) {
@@ -99,7 +99,7 @@ export const prepareDeployHookTx = async (
         {
           Hook: {
             CreateCode: arrayBufferToHex(
-              state.files?.[state.active]?.compiledContent
+              activeFile?.compiledContent
             ).toUpperCase(),
             HookOn: calculateHookOn(hookOnValues),
             HookNamespace,