diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 2dcb86a..276242a 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -16,7 +16,7 @@ jobs:
     - uses: actions/checkout@v3
 
     - name: Install dependencies
-      if: ${{matrix.BUILDER == virtualbox-iso.virtualbox}}
+      if: ${{matrix.BUILDER == 'virtualbox-iso.virtualbox'}}
       run: |
         echo "deb [arch=amd64 signed-by=/usr/share/keyrings/oracle-virtualbox-2016.gpg] https://download.virtualbox.org/virtualbox/debian $(lsb_release -cs) contrib" | sudo tee /etc/apt/sources.list.d/virtualbox.list
         wget -O- https://www.virtualbox.org/download/oracle_vbox_2016.asc | sudo gpg --yes --output /usr/share/keyrings/oracle-virtualbox-2016.gpg --dearmor
@@ -24,7 +24,7 @@ jobs:
         sudo apt-get install -y virtualbox-6.1
 
     - name: Install dependencies
-      if: ${{matrix.BUILDER == qemu.qemu}}
+      if: ${{matrix.BUILDER == 'qemu.qemu'}}
       run: |
         sudo apt-get update \
         sudo apt-get install -y \