diff --git a/Jenkins/Phabricator-windows-pipeline/Jenkinsfile b/Jenkins/Phabricator-windows-pipeline/Jenkinsfile
index 85fe895..64fa3ba 100644
--- a/Jenkins/Phabricator-windows-pipeline/Jenkinsfile
+++ b/Jenkins/Phabricator-windows-pipeline/Jenkinsfile
@@ -31,6 +31,7 @@ pipeline {
         // store all build results here, will be uploaded to GCS later
         RESULT_DIR = "${WORKSPACE}\\results"
         LLVM_DIR = "${WORKSPACE}\\llvm-project"
+        // enable sccache for this build. Comment out the line to disable it
         SCCACHE_DIR = "C:\\ws\\sccache"
     }
     options {
diff --git a/Jenkins/master-windows-pipeline/Jenkinsfile b/Jenkins/master-windows-pipeline/Jenkinsfile
index 24d3e3e..cdb277d 100644
--- a/Jenkins/master-windows-pipeline/Jenkinsfile
+++ b/Jenkins/master-windows-pipeline/Jenkinsfile
@@ -37,6 +37,7 @@ pipeline {
         SCRIPT_DIR = "${WORKSPACE}/llvm-premerge-checks/scripts"
         RESULT_DIR = "${WORKSPACE}\\results"
         LLVM_DIR = "${WORKSPACE}\\llvm-project"
+        // enable sccache for this build. Comment out the line to disable it
         SCCACHE_DIR = "C:\\ws\\sccache"
     }