diff --git a/Modules/Battery/popup.swift b/Modules/Battery/popup.swift
index d025d3cd..e9ceeda3 100644
--- a/Modules/Battery/popup.swift
+++ b/Modules/Battery/popup.swift
@@ -57,7 +57,8 @@ internal class Popup: NSView, Popup_p {
     }
     private var processesHeight: CGFloat {
         get {
-            return (self.processHeight*CGFloat(self.numberOfProcesses))+Constants.Popup.separatorHeight
+            let num = self.numberOfProcesses
+            return (self.processHeight*CGFloat(num)) + (num == 0 ? 0 : Constants.Popup.separatorHeight)
         }
     }
     private var timeFormat: String {
diff --git a/Modules/Battery/readers.swift b/Modules/Battery/readers.swift
index 7b03f3e0..b02732f3 100644
--- a/Modules/Battery/readers.swift
+++ b/Modules/Battery/readers.swift
@@ -229,6 +229,10 @@ public class ProcessReader: Reader<[TopProcess]> {
     }
     
     public override func read() {
+        if self.numberOfProcesses == 0 {
+            return
+        }
+        
         let task = Process()
         task.launchPath = "/usr/bin/top"
         task.arguments = ["-l", "1", "-o", "power", "-n", "\(self.numberOfProcesses)", "-stats", "pid,command,power"]
diff --git a/Modules/CPU/popup.swift b/Modules/CPU/popup.swift
index f5f76d09..6e353555 100644
--- a/Modules/CPU/popup.swift
+++ b/Modules/CPU/popup.swift
@@ -51,7 +51,8 @@ internal class Popup: NSView, Popup_p {
     }
     private var processesHeight: CGFloat {
         get {
-            return (self.processHeight*CGFloat(self.numberOfProcesses))+Constants.Popup.separatorHeight
+            let num = self.numberOfProcesses
+            return (self.processHeight*CGFloat(num)) + (num == 0 ? 0 : Constants.Popup.separatorHeight)
         }
     }
     
diff --git a/Modules/CPU/readers.swift b/Modules/CPU/readers.swift
index d0025a39..5cf74678 100644
--- a/Modules/CPU/readers.swift
+++ b/Modules/CPU/readers.swift
@@ -174,6 +174,10 @@ public class ProcessReader: Reader<[TopProcess]> {
     }
     
     public override func read() {
+        if self.numberOfProcesses == 0 {
+            return
+        }
+        
         let task = Process()
         task.launchPath = "/bin/ps"
         task.arguments = ["-Aceo pid,pcpu,comm", "-r"]
diff --git a/Modules/Net/popup.swift b/Modules/Net/popup.swift
index 4999ee38..948221bc 100644
--- a/Modules/Net/popup.swift
+++ b/Modules/Net/popup.swift
@@ -64,7 +64,8 @@ internal class Popup: NSView, Popup_p {
     }
     private var processesHeight: CGFloat {
         get {
-            return (self.processHeight*CGFloat(self.numberOfProcesses))+Constants.Popup.separatorHeight
+            let num = self.numberOfProcesses
+            return (self.processHeight*CGFloat(num)) + (num == 0 ? 0 : Constants.Popup.separatorHeight)
         }
     }
     
diff --git a/Modules/Net/readers.swift b/Modules/Net/readers.swift
index 37181313..1a5baccb 100644
--- a/Modules/Net/readers.swift
+++ b/Modules/Net/readers.swift
@@ -274,6 +274,10 @@ public class ProcessReader: Reader<[Network_Process]> {
     }
     
     public override func read() {
+        if self.numberOfProcesses == 0 {
+            return
+        }
+        
         let task = Process()
         task.launchPath = "/usr/bin/nettop"
         task.arguments = ["-P", "-L", "1", "-k", "time,interface,state,rx_dupe,rx_ooo,re-tx,rtt_avg,rcvsize,tx_win,tc_class,tc_mgt,cc_algo,P,C,R,W,arch"]
diff --git a/Modules/RAM/popup.swift b/Modules/RAM/popup.swift
index 83b56893..2f1556a6 100644
--- a/Modules/RAM/popup.swift
+++ b/Modules/RAM/popup.swift
@@ -48,7 +48,8 @@ internal class Popup: NSView, Popup_p {
     }
     private var processesHeight: CGFloat {
         get {
-            return (self.processHeight*CGFloat(self.numberOfProcesses))+Constants.Popup.separatorHeight
+            let num = self.numberOfProcesses
+            return (self.processHeight*CGFloat(num)) + (num == 0 ? 0 : Constants.Popup.separatorHeight)
         }
     }
     
diff --git a/Modules/RAM/readers.swift b/Modules/RAM/readers.swift
index e487dbcd..ed576346 100644
--- a/Modules/RAM/readers.swift
+++ b/Modules/RAM/readers.swift
@@ -116,6 +116,10 @@ public class ProcessReader: Reader<[TopProcess]> {
     }
     
     public override func read() {
+        if self.numberOfProcesses == 0 {
+            return
+        }
+        
         let task = Process()
         task.launchPath = "/usr/bin/top"
         task.arguments = ["-l", "1", "-o", "mem", "-n", "\(self.numberOfProcesses)", "-stats", "pid,command,mem"]