diff --git a/Source/ControlLog.xaml.cs b/Source/ControlLog.xaml.cs
index 9e792fe..dd6cb5a 100644
--- a/Source/ControlLog.xaml.cs
+++ b/Source/ControlLog.xaml.cs
@@ -89,7 +89,7 @@ public void Load(string filePath, CancellationToken ct)
                 {
                     byte[] tempBuffer = new byte[1024 * 1024];
 
-                    this.fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
+                    this.fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
                     FileInfo fileInfo = new FileInfo(filePath);
 
                     // Calcs and finally point the position to the end of the line
diff --git a/Source/LogFile.cs b/Source/LogFile.cs
index bb2daef..e4d2e0f 100644
--- a/Source/LogFile.cs
+++ b/Source/LogFile.cs
@@ -78,7 +78,7 @@ public void Load(string filePath, SynchronizationContext st, CancellationToken c
                 {                    
                     byte[] tempBuffer = new byte[1024 * 1024];
 
-                    this.fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
+                    this.fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
                     FileInfo fileInfo = new FileInfo(filePath);
 
                     // Calcs and finally point the position to the end of the line