diff --git a/lib/quantum_thirdparty/bigswitch_floodlight b/lib/quantum_thirdparty/bigswitch_floodlight
index 77aeb61..60e3924 100644
--- a/lib/quantum_thirdparty/bigswitch_floodlight
+++ b/lib/quantum_thirdparty/bigswitch_floodlight
@@ -2,7 +2,7 @@
 # ------------------------------------------
 
 # Save trace setting
-XTRACE=$(set +o | grep xtrace)
+MY_XTRACE=$(set +o | grep xtrace)
 set +o xtrace
 
 BS_FL_CONTROLLERS_PORT=${BS_FL_CONTROLLERS_PORT:-localhost:80}
@@ -47,4 +47,4 @@
 }
 
 # Restore xtrace
-$XTRACE
+$MY_XTRACE
diff --git a/lib/quantum_thirdparty/ryu b/lib/quantum_thirdparty/ryu
index f11951a..de8e086 100644
--- a/lib/quantum_thirdparty/ryu
+++ b/lib/quantum_thirdparty/ryu
@@ -2,7 +2,7 @@
 # -----------------------
 
 # Save trace setting
-XTRACE=$(set +o | grep xtrace)
+MY_XTRACE=$(set +o | grep xtrace)
 set +o xtrace
 
 
@@ -62,4 +62,4 @@
 }
 
 # Restore xtrace
-$XTRACE
+$MY_XTRACE