diff --git a/.github/workflows/push-master.yml b/.github/workflows/push-master.yml
index a778099b..407ac950 100644
--- a/.github/workflows/push-master.yml
+++ b/.github/workflows/push-master.yml
@@ -3,7 +3,6 @@ on:
   push:
     branches:
       - master
-      - vf/build-test
 
 jobs:
   master:
diff --git a/package.json b/package.json
index c694918a..8636d59e 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
     "test:wasm-crypto:deno": "deno test --allow-read --import-map=import_map.json packages/wasm-crypto/test/deno.ts",
     "test:wasm-crypto:js": "yarn test:wasm-crypto:js:jest && yarn test:wasm-crypto:js:node",
     "test:wasm-crypto:js:jest": "polkadot-dev-run-test --env node --loader ./packages/wasm-crypto/test/loader-build.js",
-    "test:wasm-crypto:js:node": "node --no-warnings --loader ./packages/wasm-crypto/test/loader-build.js ./packages/wasm-crypto/test/wasm.js && node --no-warnings --loader ./packages/wasm-crypto/test/loader-build.js ./packages/wasm-crypto/test/asm.js",
+    "test:wasm-crypto:js:node": "node --no-warnings --loader ./packages/wasm-crypto/test/loader-build.js ./packages/wasm-crypto/test/wasm.js",
     "test:wasm-crypto:rust": "cd packages/wasm-crypto && RUST_BACKTRACE=full cargo test --release -- --test-threads=1 --nocapture"
   },
   "devDependencies": {
diff --git a/packages/wasm-crypto-init/src/asm.ts b/packages/wasm-crypto-init/src/asm.ts
index 07c77cff..8dd40fbc 100644
--- a/packages/wasm-crypto-init/src/asm.ts
+++ b/packages/wasm-crypto-init/src/asm.ts
@@ -5,7 +5,9 @@ import type { InitFn } from '@polkadot/wasm-bridge/types';
 import type { WasmCryptoInstance } from './types.js';
 
 import { createWasmFn } from '@polkadot/wasm-bridge';
-import { asmJsInit } from '@polkadot/wasm-crypto-asmjs';
+import * as mod from '@polkadot/wasm-crypto-asmjs';
+
+const { asmJsInit } = mod;
 
 export { packageInfo } from './packageInfo.js';
 
diff --git a/scripts/build-wasm.sh b/scripts/build-wasm.sh
index eaf1ffc3..6ebfedc1 100755
--- a/scripts/build-wasm.sh
+++ b/scripts/build-wasm.sh
@@ -9,7 +9,6 @@ source ../scripts/rust-version.sh
 
 WSM=$PKG_NAME/build-wasm/wasm_bg.wasm
 OPT=$PKG_NAME/build-wasm/wasm_opt.wasm
-ASM=$PKG_NAME-asmjs/build/cjs/data.js
 DENO_DIR=$PKG_NAME-asmjs/build-deno/deno
 DENO_ASM=$DENO_DIR/data.js
 
@@ -30,26 +29,10 @@ echo "*** Optimising WASM output"
 echo "*** Packing WASM into baseX"
 node ../scripts/pack-wasm-base.mjs
 
-# build asmjs version from the input (optimised) WASM
-echo "*** Building asm.js version"
-../binaryen/bin/wasm2js -Oz --output $ASM $OPT
+
 
 # copy the deno version
 mkdir -p $DENO_DIR
-cp $ASM $DENO_ASM
 
-# cleanup the generated asm, converting to cjs
-sed -i -e '/import {/d' $ASM
-sed -i -e '1,/var retasmFunc = /!d' $ASM
-sed -i -e 's/var retasmFunc = .*/exports.asmJsInit = (wbg) => asmFunc(wbg);/g' $ASM
-
-# same as the cjs version, this time for deno
-sed -i -e '/import {/d' $DENO_ASM
-sed -i -e '1,/var retasmFunc = /!d' $DENO_ASM
-sed -i -e 's/var retasmFunc = .*/export const asmJsInit = (wbg) => asmFunc(wbg);/g' $DENO_ASM
-
-# cleanups
-rm -rf $PKG_NAME-asmjs/build/cjs/*-e
-rm -rf $PKG_NAME-asmjs/build-deno/deno/*-e
 rm -rf $PKG_NAME-wasm/build/cjs/*-e
 rm -rf $PKG_NAME-wasm/build-deno/deno/*-e