diff --git a/scripts/pybootchartgui/pybootchartgui/draw.py b/scripts/pybootchartgui/pybootchartgui/draw.py
index 707e7fe427..ce3af74e2b 100644
--- a/scripts/pybootchartgui/pybootchartgui/draw.py
+++ b/scripts/pybootchartgui/pybootchartgui/draw.py
@@ -703,7 +703,7 @@ def draw_processes_recursively(ctx, proc, proc_tree, y, proc_h, rect, clip) :
         cmdString = proc.cmd
     else:
         cmdString = ''
-    if (OPTIONS.show_pid or OPTIONS.show_all) and ipid is not 0:
+    if (OPTIONS.show_pid or OPTIONS.show_all) and ipid != 0:
         cmdString = cmdString + " [" + str(ipid // 1000) + "]"
     if OPTIONS.show_all:
         if proc.args:
@@ -801,7 +801,7 @@ class CumlSample:
         if self.color is None:
             i = self.next() % HSV_MAX_MOD
             h = 0.0
-            if i is not 0:
+            if i != 0:
                 h = (1.0 * i) / HSV_MAX_MOD
             s = 0.5
             v = 1.0