diff --git a/.github/workflows/llm_performance_tests.yml b/.github/workflows/llm_performance_tests.yml
index 66b31413..674f56d3 100644
--- a/.github/workflows/llm_performance_tests.yml
+++ b/.github/workflows/llm_performance_tests.yml
@@ -615,7 +615,7 @@ jobs:
             if [ ${{ inputs.dgpu }} == "true"  ]; then
               test_platform+=("\"perf-dgpu\"")
             fi
-            printf 'platform=["%s"]\n' "$(IFS=','; echo "${test_platform[*]}")" >> "$GITHUB_OUTPUT"
+            printf 'platform=[%s]\n' "$(IFS=','; echo "${test_platform[*]}")" >> "$GITHUB_OUTPUT"
           else
             echo 'platform=["perf-mtl", "perf-lnl"]' >> "$GITHUB_OUTPUT"
           fi