diff --git a/armi/runLog.py b/armi/runLog.py
index f4d222d56..bb8c36945 100644
--- a/armi/runLog.py
+++ b/armi/runLog.py
@@ -275,14 +275,17 @@ def close(mpiRank=None):
     LOG._restoreStandardStreams()
 
 
-def concatenateLogs():
+def concatenateLogs(logDir=None):
     """
     Concatenate the armi run logs and delete them.
 
     Should only ever be called by parent.
     """
+    if logDir is None:
+        logDir = context.LOG_DIR
+
     # find all the logging-module-based log files
-    stdoutFiles = sorted(glob(os.path.join("logs", "*.stdout")))
+    stdoutFiles = sorted(glob(os.path.join(logDir, "*.stdout")))
     if not len(stdoutFiles):
         info("No log files found to concatenate.")
         return
diff --git a/armi/tests/test_runLog.py b/armi/tests/test_runLog.py
index 7f1c2e690..f2466fba6 100644
--- a/armi/tests/test_runLog.py
+++ b/armi/tests/test_runLog.py
@@ -14,6 +14,8 @@
 
 from io import StringIO
 import logging
+import os
+from shutil import rmtree
 import unittest
 
 from armi import context, runLog
@@ -192,6 +194,35 @@ def test_setVerbosity(self):
             runLog.LOG.setVerbosity(logging.WARNING + 1)
             self.assertEqual(runLog.LOG.getVerbosity(), logging.WARNING)
 
+    def test_concatenateLogs(self):
+        """simple test of the concat logs function"""
+        # create the log dir
+        logDir = "test_concatenateLogs"
+        if os.path.exists(logDir):
+            rmtree(logDir)
+        context.createLogDir(0, logDir)
+
+        # create as stdout file
+        stdoutFile = os.path.join(logDir, logDir + ".0.0.stdout")
+        f = open(stdoutFile, "w")
+        f.write("hello world\n")
+        f.close()
+        self.assertTrue(os.path.exists(stdoutFile))
+
+        # create a stderr file
+        stderrFile = os.path.join(logDir, logDir + ".0.0.stderr")
+        f = open(stderrFile, "w")
+        f.write("goodbye cruel world\n")
+        f.close()
+        self.assertTrue(os.path.exists(stderrFile))
+
+        # concat logs
+        runLog.concatenateLogs(logDir=logDir)
+
+        # verify output
+        self.assertFalse(os.path.exists(stdoutFile))
+        self.assertFalse(os.path.exists(stderrFile))
+
 
 if __name__ == "__main__":
     # import sys;sys.argv = ['', 'Test.testName']