diff --git a/ci-scripts/cls_oaicitest.py b/ci-scripts/cls_oaicitest.py
index ec1202cb21..0865d4efb5 100644
--- a/ci-scripts/cls_oaicitest.py
+++ b/ci-scripts/cls_oaicitest.py
@@ -535,7 +535,7 @@ class OaiCiTest():
 		while (doOutterLoop):
 			SSH.command('cd ' + self.UESourceCodePath + '/cmake_targets/ran_build/build', '\$', 5)
 			SSH.command('echo ' + self.UEPassword + ' | sudo -S rm -Rf ' + self.UESourceCodePath + '/cmake_targets/ue_' + self.testCase_id + '.log', '\$', 5)
-			SSH.command('echo $USER; nohup sudo -E ./my-lte-uesoftmodem-run' + str(self.UE_instance) + '.sh' + ' > ' + self.UESourceCodePath + '/cmake_targets/ue_' + self.testCase_id + '.log ' + ' 2>&1 &', self.UEUserName, 5)
+			SSH.command('echo $USER; nohup sudo -E stdbuf -o0 ./my-lte-uesoftmodem-run' + str(self.UE_instance) + '.sh' + ' > ' + self.UESourceCodePath + '/cmake_targets/ue_' + self.testCase_id + '.log ' + ' 2>&1 &', self.UEUserName, 5)
 			time.sleep(6)
 			SSH.command('cd ../..', '\$', 5)
 			doLoop = True
diff --git a/ci-scripts/ran.py b/ci-scripts/ran.py
index f95ce90c66..beb89370d2 100644
--- a/ci-scripts/ran.py
+++ b/ci-scripts/ran.py
@@ -485,7 +485,7 @@ class RANManagement():
 
 		mySSH.command('chmod 775 ./my-lte-softmodem-run' + str(self.eNB_instance) + '.sh', '\$', 5)
 		mySSH.command('echo ' + lPassWord + ' | sudo -S rm -Rf enb_' + self.testCase_id + '.log', '\$', 5)
-		mySSH.command('echo $USER; nohup sudo -E ./my-lte-softmodem-run' + str(self.eNB_instance) + '.sh > ' + lSourcePath + '/cmake_targets/enb_' + self.testCase_id + '.log 2>&1 &', lUserName, 10)
+		mySSH.command('echo $USER; nohup sudo -E stdbuf -o0 ./my-lte-softmodem-run' + str(self.eNB_instance) + '.sh > ' + lSourcePath + '/cmake_targets/enb_' + self.testCase_id + '.log 2>&1 &', lUserName, 10)
 
 
 		#stats monitoring during runtime