diff --git a/src/Commands/MergeTool.cs b/src/Commands/MergeTool.cs
index f67f5e48..fc6d0d75 100644
--- a/src/Commands/MergeTool.cs
+++ b/src/Commands/MergeTool.cs
@@ -24,7 +24,7 @@ namespace SourceGit.Commands
 
             if (!File.Exists(toolPath))
             {
-                Dispatcher.UIThread.Post(() => App.RaiseException(repo, $"Can NOT found external merge tool in '{toolPath}'!"));
+                Dispatcher.UIThread.Post(() => App.RaiseException(repo, $"Can NOT find external merge tool in '{toolPath}'!"));
                 return false;
             }
 
@@ -54,7 +54,7 @@ namespace SourceGit.Commands
 
             if (!File.Exists(toolPath))
             {
-                Dispatcher.UIThread.Invoke(() => App.RaiseException(repo, $"Can NOT found external diff tool in '{toolPath}'!"));
+                Dispatcher.UIThread.Invoke(() => App.RaiseException(repo, $"Can NOT find external diff tool in '{toolPath}'!"));
                 return false;
             }
 
diff --git a/src/ViewModels/Launcher.cs b/src/ViewModels/Launcher.cs
index 4c0714df..789829e6 100644
--- a/src/ViewModels/Launcher.cs
+++ b/src/ViewModels/Launcher.cs
@@ -360,7 +360,7 @@ namespace SourceGit.ViewModels
 
             if (!Path.Exists(node.Id))
             {
-                App.RaiseException(node.Id, "Repository does NOT exists any more. Please remove it.");
+                App.RaiseException(node.Id, "Repository does NOT exist any more. Please remove it.");
                 return;
             }
 
diff --git a/src/ViewModels/Repository.cs b/src/ViewModels/Repository.cs
index 83697c30..0bb54d04 100644
--- a/src/ViewModels/Repository.cs
+++ b/src/ViewModels/Repository.cs
@@ -772,7 +772,7 @@ namespace SourceGit.ViewModels
 
             if (_currentBranch == null)
             {
-                App.RaiseException(_fullpath, "Can NOT found current branch!!!");
+                App.RaiseException(_fullpath, "Can NOT find current branch!!!");
                 return;
             }
 
@@ -796,7 +796,7 @@ namespace SourceGit.ViewModels
 
             if (_currentBranch == null)
             {
-                App.RaiseException(_fullpath, "Can NOT found current branch!!!");
+                App.RaiseException(_fullpath, "Can NOT find current branch!!!");
                 return;
             }
 
@@ -1288,7 +1288,7 @@ namespace SourceGit.ViewModels
         {
             if (_currentBranch == null)
             {
-                App.RaiseException(_fullpath, "Git do not hold any branch until you do first commit.");
+                App.RaiseException(_fullpath, "Git cannot create a branch before your first commit.");
                 return;
             }
 
@@ -1354,7 +1354,7 @@ namespace SourceGit.ViewModels
         {
             if (_currentBranch == null)
             {
-                App.RaiseException(_fullpath, "Git do not hold any branch until you do first commit.");
+                App.RaiseException(_fullpath, "Git cannot create a branch before your first commit.");
                 return;
             }
 
diff --git a/src/ViewModels/WorkingCopy.cs b/src/ViewModels/WorkingCopy.cs
index a6e11661..2b62a9bf 100644
--- a/src/ViewModels/WorkingCopy.cs
+++ b/src/ViewModels/WorkingCopy.cs
@@ -1707,7 +1707,7 @@ namespace SourceGit.ViewModels
 
             if (!_repo.CanCreatePopup())
             {
-                App.RaiseException(_repo.FullPath, "Repository has unfinished job! Please wait!");
+                App.RaiseException(_repo.FullPath, "Repository has an unfinished job! Please wait!");
                 return;
             }