diff --git a/Sources/NetworkProtection/Diagnostics/NetworkProtectionConnectionBandwidthAnalyzer.swift b/Sources/NetworkProtection/Diagnostics/NetworkProtectionConnectionBandwidthAnalyzer.swift
index 77ebdcf77..3ce0072d9 100644
--- a/Sources/NetworkProtection/Diagnostics/NetworkProtectionConnectionBandwidthAnalyzer.swift
+++ b/Sources/NetworkProtection/Diagnostics/NetworkProtectionConnectionBandwidthAnalyzer.swift
@@ -111,8 +111,16 @@ final class NetworkProtectionConnectionBandwidthAnalyzer {
 
     private func bytesPerSecond(newer: Snapshot, older: Snapshot) -> (rx: Double, tx: Double) {
         let deltaSeconds = newer.date.timeIntervalSince1970 - older.date.timeIntervalSince1970
-        let rx = Double(newer.rxBytes - older.rxBytes) / deltaSeconds
-        let tx = Double(newer.txBytes - older.txBytes) / deltaSeconds
+        let rx: Double
+        let tx: Double
+
+        if deltaSeconds > 0 {
+            rx = Double(newer.rxBytes - older.rxBytes) / deltaSeconds
+            tx = Double(newer.txBytes - older.txBytes) / deltaSeconds
+        } else {
+            rx = 0
+            tx = 0
+        }
 
         return (rx, tx)
     }