diff --git a/systemvm/debian/root/health_checks/cpu_usage_check.py b/systemvm/debian/root/health_checks/cpu_usage_check.py
index 270ea2086107..c753b86fbbce 100644
--- a/systemvm/debian/root/health_checks/cpu_usage_check.py
+++ b/systemvm/debian/root/health_checks/cpu_usage_check.py
@@ -37,8 +37,9 @@ def main():
           "'{ split($1, vs, \",\");  idle=vs[length(vs)]; " \
           "sub(\"%\", \"\", idle); printf \"%.2f\", 100 - idle }'"
     pout = Popen(cmd, shell=True, stdout=PIPE)
-    if pout.wait() == 0:
-        currentUsage = float(pout.communicate()[0].decode().strip())
+    stdout, _ = pout.communicate()
+    if pout.returncode == 0:
+        currentUsage = float(stdout.decode().strip())
         if currentUsage > maxCpuUsage:
             print("CPU Usage " + str(currentUsage) +
                   "% has crossed threshold of " + str(maxCpuUsage) + "%")
diff --git a/systemvm/debian/root/health_checks/gateways_check.py b/systemvm/debian/root/health_checks/gateways_check.py
index e3b661b7498a..19841c97b1de 100644
--- a/systemvm/debian/root/health_checks/gateways_check.py
+++ b/systemvm/debian/root/health_checks/gateways_check.py
@@ -36,7 +36,8 @@ def main():
         for i in range(5):
             pingCmd = "ping " + gw + " -c 5 -w 10"
             pout = Popen(pingCmd, shell=True, stdout=PIPE)
-            if pout.wait() == 0:
+            pout.communicate()
+            if pout.returncode == 0:
                 reachableGw = True
                 break
 
diff --git a/systemvm/debian/root/health_checks/iptables_check.py b/systemvm/debian/root/health_checks/iptables_check.py
index 27e06f8352b6..ebf7b4bd8257 100644
--- a/systemvm/debian/root/health_checks/iptables_check.py
+++ b/systemvm/debian/root/health_checks/iptables_check.py
@@ -41,13 +41,14 @@ def main():
 
         fetchIpTableEntriesCmd = "iptables-save | grep " + destIp
         pout = Popen(fetchIpTableEntriesCmd, shell=True, stdout=PIPE)
-        if pout.wait() != 0:
+        stdout, _ = pout.communicate()
+        if pout.returncode != 0:
             failedCheck = True
             failureMessage = failureMessage + "Unable to execute iptables-save command " \
                                               "for fetching rules by " + fetchIpTableEntriesCmd + "\n"
             continue
 
-        ipTablesMatchingEntries = pout.communicate()[0].decode().strip().split('\n')
+        ipTablesMatchingEntries = stdout.decode().strip().split('\n')
         for pfEntryListExpected in entriesExpected:
             foundPfEntryList = False
             for ipTableEntry in ipTablesMatchingEntries:
diff --git a/systemvm/debian/root/health_checks/memory_usage_check.py b/systemvm/debian/root/health_checks/memory_usage_check.py
index eba0d5e49dde..f468160648f6 100644
--- a/systemvm/debian/root/health_checks/memory_usage_check.py
+++ b/systemvm/debian/root/health_checks/memory_usage_check.py
@@ -35,9 +35,10 @@ def main():
     maxMemoryUsage = float(data["maxMemoryUsage"])
     cmd = "free | awk 'FNR == 2 { print $3 * 100 / $2 }'"
     pout = Popen(cmd, shell=True, stdout=PIPE)
+    stdout, _ = pout.communicate()
 
-    if pout.wait() == 0:
-        currentUsage = float(pout.communicate()[0].decode().strip())
+    if pout.returncode == 0:
+        currentUsage = float(stdout.decode().strip())
         if currentUsage > maxMemoryUsage:
             print("Memory Usage " + str(currentUsage) +
                   "% has crossed threshold of " + str(maxMemoryUsage) + "%")