diff --git a/.github/workflows/wheel_image.yml b/.github/workflows/wheel_image.yml
index 1f6c726ab0a..b53b884b63f 100644
--- a/.github/workflows/wheel_image.yml
+++ b/.github/workflows/wheel_image.yml
@@ -73,4 +73,4 @@ jobs:
           push: ${{ github.event.inputs.upload }}
           tags: ${{ github.event.inputs.container_registry }}/neuronsimulator/neuron_wheel:${{ github.event.inputs.tag }}-${{ matrix.arch }}
           build-args: |
-            MANYLINUX_IMAGE: ${{ github.event.inputs.base_image }}_${{ matrix.arch }}
+            MANYLINUX_IMAGE=${{ github.event.inputs.base_image }}_${{ matrix.arch }}