diff --git a/etc/evergreen_yml_components/tasks/compile_tasks.yml b/etc/evergreen_yml_components/tasks/compile_tasks.yml
index 2e4ca683541..1d79a47bcec 100644
--- a/etc/evergreen_yml_components/tasks/compile_tasks.yml
+++ b/etc/evergreen_yml_components/tasks/compile_tasks.yml
@@ -875,6 +875,7 @@ tasks:
           binary: bash
           env:
             PROMOTE_TASK_ID: ${promote_task_id}
+            PROMOTE_PROJECT_IDENTIFIER: ${promote_custom_project_identifier}
             EVERGREEN_API_USER: ${evergreen_api_user}
             EVERGREEN_API_KEY: ${evergreen_api_key}
           args:
@@ -888,6 +889,7 @@ tasks:
           binary: bash
           env:
             PROMOTE_TASK_ID: ${promote_archive_dist_test_task_id}
+            PROMOTE_PROJECT_IDENTIFIER: ${promote_custom_project_identifier}
             CDN_PATH: "server-custom-builds"
             EVERGREEN_API_USER: ${evergreen_api_user}
             EVERGREEN_API_KEY: ${evergreen_api_key}
@@ -965,6 +967,7 @@ tasks:
           binary: bash
           env:
             PROMOTE_TASK_ID: ${promote_task_id}
+            PROMOTE_PROJECT_IDENTIFIER: ${promote_custom_project_identifier}
             CDN_PATH: "sys-perf-builds"
             EVERGREEN_API_USER: ${evergreen_api_user}
             EVERGREEN_API_KEY: ${evergreen_api_key}
diff --git a/evergreen/get_custom_build_promotion_expansions.sh b/evergreen/get_custom_build_promotion_expansions.sh
index 72bb0860f98..3c05f06ace8 100755
--- a/evergreen/get_custom_build_promotion_expansions.sh
+++ b/evergreen/get_custom_build_promotion_expansions.sh
@@ -20,7 +20,12 @@ else
     promote_extension="tgz"
 fi
 
-promote_project_identifier=$(cat task_data.json | jq -r ".project_identifier")
+if [ -z "$PROMOTE_PROJECT_IDENTIFIER" ]; then
+    promote_project_identifier=$(cat task_data.json | jq -r ".project_identifier")
+else
+    promote_project_identifier=$PROMOTE_PROJECT_IDENTIFIER
+fi
+
 promote_version_id=$(cat task_data.json | jq -r ".version_id")
 promote_build_id=$(cat task_data.json | jq -r ".build_id")
 promote_build_variant=$(cat task_data.json | jq -r ".build_variant")
diff --git a/evergreen/get_custom_build_promotion_expansions_debug.sh b/evergreen/get_custom_build_promotion_expansions_debug.sh
index f28e1723144..33739e7a792 100755
--- a/evergreen/get_custom_build_promotion_expansions_debug.sh
+++ b/evergreen/get_custom_build_promotion_expansions_debug.sh
@@ -20,7 +20,12 @@ else
     promote_extension="tgz"
 fi
 
-promote_project_identifier=$(cat debug_task_data.json | jq -r ".project_identifier")
+if [ -z "$PROMOTE_PROJECT_IDENTIFIER" ]; then
+    promote_project_identifier=$(cat task_data.json | jq -r ".project_identifier")
+else
+    promote_project_identifier=$PROMOTE_PROJECT_IDENTIFIER
+fi
+
 promote_version_id=$(cat debug_task_data.json | jq -r ".version_id")
 promote_build_id=$(cat debug_task_data.json | jq -r ".build_id")
 promote_build_variant=$(cat debug_task_data.json | jq -r ".build_variant")