diff --git a/lib/ipmi_client.py b/lib/ipmi_client.py
index 6fffe2c..87b2618 100644
--- a/lib/ipmi_client.py
+++ b/lib/ipmi_client.py
@@ -96,7 +96,6 @@
     """
 
     # Assumption: "U" is in the global ipmi_required_options.
-    global ipmi_required_options
     print_output = 0
 
     command_string = create_ipmi_ext_command_string("power status")
diff --git a/tox.ini b/tox.ini
index 5b27dc6..84d150a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,7 +5,6 @@
 passenv = *
 setenv =
     ARG_FILE={envtmpdir}/argument_file.txt
-    OPENBMC_PASSWORD=0penBmc
     OPENBMC_USERNAME=root
     SYSLOG_IP_ADDRESS=127.0.0.1
     SYSLOG_PORT=514
@@ -25,7 +24,7 @@
 setenv = {[testenv]setenv}
 commands =
     {[testenv]commands}
-    python -m robot.run --argumentfile {env:ARG_FILE} {posargs}
+    python3 -m robot.run --argumentfile {env:ARG_FILE} {posargs}
 
 
 [testenv:palmetto]
@@ -34,7 +33,7 @@
     OPENBMC_MODEL=./data/Palmetto.py
 commands =
     {[testenv]commands}
-    python -m robot.run --argumentfile {env:ARG_FILE} {posargs}
+    python3 -m robot.run --argumentfile {env:ARG_FILE} {posargs}
 
 
 [testenv:qemu]
@@ -43,7 +42,7 @@
     OPENBMC_MODEL=./data/Palmetto.py
 commands =
     {[testenv]commands}
-    python -m robot.run --argumentfile {env:ARG_FILE} {posargs}
+    python3 -m robot.run --argumentfile {env:ARG_FILE} {posargs}
 
 
 [testenv:witherspoon]
@@ -52,7 +51,7 @@
     OPENBMC_MODEL=./data/Witherspoon.py
 commands =
     {[testenv]commands}
-    python -m robot.run --argumentfile {env:ARG_FILE} {posargs}
+    python3 -m robot.run --argumentfile {env:ARG_FILE} {posargs}
 
 [testenv:romulus]
 deps     = {[testenv]deps}
@@ -60,4 +59,4 @@
     OPENBMC_MODEL=./data/Romulus.py
 commands =
     {[testenv]commands}
-    python -m robot.run --argumentfile {env:ARG_FILE} {posargs}
+    python3 -m robot.run --argumentfile {env:ARG_FILE} {posargs}