diff --git a/.github/workflows/interface-unit-tests.yml b/.github/workflows/interface-unit-tests.yml
index 123aa53bd01..0eb8118adf9 100644
--- a/.github/workflows/interface-unit-tests.yml
+++ b/.github/workflows/interface-unit-tests.yml
@@ -276,7 +276,7 @@ jobs:
       install_pennylane_lightning_master: true
       pytest_coverage_flags: ${{ inputs.pytest_coverage_flags }}
       pytest_markers: tf and not qcut and not finite-diff and not param-shift
-      pytest_additional_args: ${{ needs.setup-ci-load.outputs.enable-split == '1' && format('--splits {0} --group {1}', '3', matrix.group) || '' }}
+      pytest_additional_args: ${{ fromJSON(needs.setup-ci-load.outputs.enable-split) == '1' && format('--splits {0} --group {1}', '3', matrix.group) || '' }}
       pytest_durations_file_path: '.github/workflows/tf_tests_durations.json'
       pytest_store_durations: ${{ inputs.pytest_store_durations }}
       additional_pip_packages: pytest-split
@@ -295,7 +295,7 @@ jobs:
            || fromJSON(needs.setup-ci-load.outputs.matrix-max-parallel).default
          }}
       matrix:
-        group: ${{ needs.setup-ci-load.outputs.enable-split == '1' && fromJSON('[1, 2, 3, 4, 5]') || fromJSON('[1]') }}
+        group: ${{ fromJSON(needs.setup-ci-load.outputs.enable-split) == '1' && fromJSON('[1, 2, 3, 4, 5]') || fromJSON('[1]') }}
         python-version: >-
           ${{
             fromJSON(needs.setup-ci-load.outputs.python-version).jax-tests
@@ -315,7 +315,7 @@ jobs:
       install_pennylane_lightning_master: true
       pytest_coverage_flags: ${{ inputs.pytest_coverage_flags }}
       pytest_markers: jax and not qcut and not finite-diff and not param-shift
-      pytest_additional_args: ${{ needs.setup-ci-load.outputs.enable-split == '1' && format('--splits {0} --group {1}', '5', matrix.group) || '' }}
+      pytest_additional_args: ${{ fromJSON(needs.setup-ci-load.outputs.enable-split) == '1' && format('--splits {0} --group {1}', '5', matrix.group) || '' }}
       pytest_durations_file_path: .github/workflows/jax_tests_durations.json
       pytest_store_durations: ${{ inputs.pytest_store_durations }}
       additional_pip_packages: pytest-split
@@ -334,7 +334,7 @@ jobs:
            || fromJSON(needs.setup-ci-load.outputs.matrix-max-parallel).default
          }}
       matrix:
-        group: ${{ needs.setup-ci-load.outputs.enable-split && fromJSON('[1, 2, 3, 4, 5]') || fromJSON('[1]') }}
+        group: ${{ fromJSON(needs.setup-ci-load.outputs.enable-split) && fromJSON('[1, 2, 3, 4, 5]') || fromJSON('[1]') }}
         python-version: >-
           ${{
             fromJSON(needs.setup-ci-load.outputs.python-version).core-tests
@@ -354,7 +354,7 @@ jobs:
       install_pennylane_lightning_master: true
       pytest_coverage_flags: ${{ inputs.pytest_coverage_flags }}
       pytest_markers: core and not qcut and not finite-diff and not param-shift
-      pytest_additional_args: ${{ needs.setup-ci-load.outputs.enable-split == '1' && format('--splits {0} --group {1}', '5', matrix.group ) || '' }}
+      pytest_additional_args: ${{ fromJSON(needs.setup-ci-load.outputs.enable-split) == '1' && format('--splits {0} --group {1}', '5', matrix.group ) || '' }}
       pytest_durations_file_path: .github/workflows/core_tests_durations.json
       pytest_store_durations: ${{ inputs.pytest_store_durations }}
       additional_pip_packages: pytest-split