diff --git a/.github/workflows/build-x86-image.yaml b/.github/workflows/build-x86-image.yaml
index 1e1d0f659b4..8e7f3f7da21 100644
--- a/.github/workflows/build-x86-image.yaml
+++ b/.github/workflows/build-x86-image.yaml
@@ -531,6 +531,7 @@ jobs:
       - name: Set environment variables
         run: |
           if [ $(($RANDOM%2)) -ne 0 ]; then
+            # run as root and use valgrind to debug memory leak
             echo "VERSION=$(cat VERSION)-debug" >> "$GITHUB_ENV"
             echo "DEBUG_WRAPPER=valgrind" >> "$GITHUB_ENV"
           fi
@@ -726,6 +727,7 @@ jobs:
       - name: Set environment variables
         run: |
           if [ $(($RANDOM%2)) -ne 0 ]; then
+            # run as root and use valgrind to debug memory leak
             echo "VERSION=$(cat VERSION)-debug" >> "$GITHUB_ENV"
             echo "DEBUG_WRAPPER=valgrind" >> "$GITHUB_ENV"
           fi
@@ -892,6 +894,7 @@ jobs:
       - name: Set environment variables
         run: |
           if [ $(($RANDOM%2)) -ne 0 ]; then
+            # run as root and use valgrind to debug memory leak
             echo "VERSION=$(cat VERSION)-debug" >> "$GITHUB_ENV"
             echo "DEBUG_WRAPPER=valgrind" >> "$GITHUB_ENV"
           fi
@@ -1077,6 +1080,7 @@ jobs:
       - name: Set environment variables
         run: |
           if [ $(($RANDOM%2)) -ne 0 ]; then
+            # run as root and use valgrind to debug memory leak
             echo "VERSION=$(cat VERSION)-debug" >> "$GITHUB_ENV"
             echo "DEBUG_WRAPPER=valgrind" >> "$GITHUB_ENV"
           fi