diff --git a/.kokoro/presubmit/node14/system-test-multiplexed-session.cfg b/.kokoro/presubmit/node14/system-test-multiplexed-session.cfg
index 8bf1160cd..aeeace4e8 100644
--- a/.kokoro/presubmit/node14/system-test-multiplexed-session.cfg
+++ b/.kokoro/presubmit/node14/system-test-multiplexed-session.cfg
@@ -12,6 +12,6 @@ env_vars: {
 }
 
 env_vars: {
-  key: "GOOGLE_CLOUD_SPANNER_ENABLE_MULTIPLEXED_SESSIONS"
+  key: "GOOGLE_CLOUD_SPANNER_MULTIPLEXED_SESSIONS"
   value: "true"
 }
\ No newline at end of file
diff --git a/.kokoro/system-test.sh b/.kokoro/system-test.sh
index bb20a4220..2156dbd28 100755
--- a/.kokoro/system-test.sh
+++ b/.kokoro/system-test.sh
@@ -45,11 +45,7 @@ if [[ $KOKORO_BUILD_ARTIFACTS_SUBDIR = *"continuous"* ]] || [[ $KOKORO_BUILD_ART
   trap cleanup EXIT HUP
 fi
 
-# If tests are running with enabled multiplexed session, configure env
-# GOOGLE_CLOUD_SPANNER_MULTIPLEXED_SESSIONS
-if [[ $GOOGLE_CLOUD_SPANNER_ENABLE_MULTIPLEXED_SESSIONS = *"true"* ]]; then
-  export GOOGLE_CLOUD_SPANNER_MULTIPLEXED_SESSIONS=true
-fi
+echo env variable is: $GOOGLE_CLOUD_SPANNER_MULTIPLEXED_SESSION
 
 npm run system-test
 
diff --git a/src/session-factory.ts b/src/session-factory.ts
index 1559176bc..34f0d7642 100644
--- a/src/session-factory.ts
+++ b/src/session-factory.ts
@@ -118,6 +118,7 @@ export class SessionFactory
       ? (this.isMultiplexed = true)
       : (this.isMultiplexed = false);
     // Multiplexed sessions should only be created if its enabled.
+    console.log('mux enabled?: ', this.isMultiplexed);
     if (this.isMultiplexed) {
       this.multiplexedSession_.on('error', this.emit.bind(database, 'error'));
       this.multiplexedSession_.createSession();