--- tests/apbs_tester.py.orig	2016-06-08 13:55:06.000000000 -0400
+++ tests/apbs_tester.py	2016-06-08 13:55:32.000000000 -0400
@@ -59,7 +59,7 @@
     output_file = open( output_name, 'w' )
     
     # Construct the system command and make the call
-    command = [ binary, input_file ]
+    command = [ mpiexec, binary, input_file ]
     subprocess.call( command, stdout = output_file )
     
     # Look for the results in the output file