diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 19fbc81..4ad3de3 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -1,11 +1,6 @@
 name: "Nightly deploy"
 
 on:
-  push:
-    branches: [ "main", "development" ]
-  pull_request:
-    # The branches below must be a subset of the branches above
-    branches: [ "main", "development" ]
   schedule:
     - cron: '0 2 * * *'
   workflow_dispatch:
@@ -25,6 +20,8 @@ jobs:
           ref: ${{ matrix.refs }}
           submodules: 'recursive'
       - name : Build
+        env:
+          PICO_SDK_PATH: ../pico-sdk
         run: |
            ./workflows/autobuild.sh
            ./build_pico_fido.sh
diff --git a/build_pico_fido.sh b/build_pico_fido.sh
index 332a14b..b661942 100755
--- a/build_pico_fido.sh
+++ b/build_pico_fido.sh
@@ -4,6 +4,8 @@ VERSION_MAJOR="5"
 VERSION_MINOR="12"
 
 rm -rf release/*
+mkdir -p build_release
+mkdir -p release
 cd build_release
 
 for board in 0xcb_helios \
@@ -96,7 +98,7 @@ for board in 0xcb_helios \
     wiznet_w5100s_evb_pico
 do
     rm -rf *
-    PICO_SDK_PATH=../../pico-sdk cmake .. -DPICO_BOARD=$board
+    PICO_SDK_PATH="${PICO_SDK_PATH:-../../pico-sdk}" cmake .. -DPICO_BOARD=$board
     make -kj20
     mv pico_fido.uf2 ../release/pico_fido_$board-$VERSION_MAJOR.$VERSION_MINOR.uf2