diff --git a/Source/Editor/Editor.cs b/Source/Editor/Editor.cs
index 7e624efd3..9d7a1484e 100644
--- a/Source/Editor/Editor.cs
+++ b/Source/Editor/Editor.cs
@@ -740,7 +740,7 @@ namespace FlaxEditor
                 var procSettings = new CreateProcessSettings
                 {
                     FileName = Platform.ExecutableFilePath,
-                    Arguments = string.Format("-project \"{0}\"" + (_projectIsNew ? " -new" : string.Empty), _projectToOpen),
+                    Arguments = string.Format("-project=\"{0}\"" + (_projectIsNew ? " -new" : string.Empty), _projectToOpen),
                     ShellExecute = true,
                     WaitForEnd = false,
                     HiddenWindow = false,
diff --git a/Source/Editor/Windows/SplashScreen.cpp b/Source/Editor/Windows/SplashScreen.cpp
index 86c695d6f..85a09f849 100644
--- a/Source/Editor/Windows/SplashScreen.cpp
+++ b/Source/Editor/Windows/SplashScreen.cpp
@@ -29,7 +29,7 @@ const Char* SplashScreenQuotes[] =
 #elif PLATFORM_LINUX
     TEXT("Try it on a Raspberry"),
     TEXT("Trying to exit vim"),
-    TEXT("sudo flax --project HelloWorld.flaxproj"),
+    TEXT("sudo flax --project=HelloWorld.flaxproj"),
 #elif PLATFORM_MAC
     TEXT("don't compare Macbooks to oranges."),
     TEXT("Why does macbook heat up?\nBecause it doesn't have windows"),
diff --git a/Source/Engine/Engine/CommandLine.h b/Source/Engine/Engine/CommandLine.h
index 79c9c30ae..8a1f740a1 100644
--- a/Source/Engine/Engine/CommandLine.h
+++ b/Source/Engine/Engine/CommandLine.h
@@ -124,7 +124,7 @@ public:
 
 #if USE_EDITOR
         /// <summary>
-        /// -project !path! (Startup project path)
+        /// -project=<path> (Startup project path)
         /// </summary>
         String Project;
 
@@ -154,7 +154,7 @@ public:
         Nullable<bool> ClearCookerCache;
 
         /// <summary>
-        /// The build preset (-build !preset.target! or -build !preset!) (run game building on startup and exit app on end).
+        /// The build preset (-build=<preset.target> or -build=<preset>) (run game building on startup and exit app on end).
         /// </summary>
         Nullable<String> Build;
 
@@ -174,7 +174,7 @@ public:
         Nullable<bool> Exit;
 
         /// <summary>
-        /// -play !guid! ( Scene to play, can be empty to use default )
+        /// -play=<guid> ( Scene to play, can be empty to use default )
         /// </summary>
         Nullable<String> Play;
 #endif
diff --git a/Source/Tools/Flax.Build/Projects/CMake/CMakeProjectGenerator.cs b/Source/Tools/Flax.Build/Projects/CMake/CMakeProjectGenerator.cs
index da68565fb..4f32e1080 100644
--- a/Source/Tools/Flax.Build/Projects/CMake/CMakeProjectGenerator.cs
+++ b/Source/Tools/Flax.Build/Projects/CMake/CMakeProjectGenerator.cs
@@ -439,8 +439,7 @@ namespace Flax.Build.Projects.CMake
                 var args = new List<string>();
                 if (configuration.Platform == TargetPlatform.Linux || configuration.Platform == TargetPlatform.Mac)
                     args.Add("-std");
-                args.Add("-project");
-                args.Add(project.WorkspaceRootPath);
+                args.Add($"-project=\"{project.WorkspaceRootPath}\"");
                 args.Add("-skipCompile");
                 arguments = args.ToArray();
                 return program;
diff --git a/Source/Tools/Flax.Build/Projects/VisualStudio/VCProjectGenerator.cs b/Source/Tools/Flax.Build/Projects/VisualStudio/VCProjectGenerator.cs
index a4d772e0d..0ed967c6c 100644
--- a/Source/Tools/Flax.Build/Projects/VisualStudio/VCProjectGenerator.cs
+++ b/Source/Tools/Flax.Build/Projects/VisualStudio/VCProjectGenerator.cs
@@ -401,7 +401,7 @@ namespace Flax.Build.Projects.VisualStudio
                 cppTargetsFileContent.AppendLine("    <TargetName>$(RootNamespace)$(Configuration.Split('.')[0])</TargetName>");
                 cppTargetsFileContent.AppendLine("    <TargetPath>$(OutDir)/$(TargetName)$(TargetExt)</TargetPath>");
                 if (!string.IsNullOrEmpty(debuggerProjectPath))
-                    cppTargetsFileContent.AppendLine(string.Format("    <LocalDebuggerCommandArguments>-project \"{0}\"</LocalDebuggerCommandArguments>", debuggerProjectPath));
+                    cppTargetsFileContent.AppendLine(string.Format("    <LocalDebuggerCommandArguments>-project=\"{0}\"</LocalDebuggerCommandArguments>", debuggerProjectPath));
                 else
                     cppTargetsFileContent.AppendLine("    <LocalDebuggerCommandArguments></LocalDebuggerCommandArguments>");
                 cppTargetsFileContent.AppendLine(string.Format("    <LocalDebuggerCommand>{0}</LocalDebuggerCommand>", editorPath));
diff --git a/Source/Tools/Flax.Build/Projects/VisualStudio/VisualStudioProjectGenerator.cs b/Source/Tools/Flax.Build/Projects/VisualStudio/VisualStudioProjectGenerator.cs
index d866448b2..21736633f 100644
--- a/Source/Tools/Flax.Build/Projects/VisualStudio/VisualStudioProjectGenerator.cs
+++ b/Source/Tools/Flax.Build/Projects/VisualStudio/VisualStudioProjectGenerator.cs
@@ -635,7 +635,7 @@ namespace Flax.Build.Projects.VisualStudio
                 var configuration = "$(FlaxConfiguration)";
                 var editorPath = Utilities.NormalizePath(Path.Combine(Globals.EngineRoot, Platform.GetEditorBinaryDirectory(), configuration, $"FlaxEditor{Utilities.GetPlatformExecutableExt()}")).Replace('\\', '/');
                 var workspacePath = Utilities.NormalizePath(solutionDirectory).Replace('\\', '/');
-                var args = Globals.Project.Name == "Flax" ? "" : $"-project \\\"{workspacePath}\\\"";
+                var args = Globals.Project.Name == "Flax" ? "" : $"-project=\\\"{workspacePath}\\\"";
                 foreach (var project in projects)
                 {
                     if (project.Type == TargetType.DotNetCore)
diff --git a/Source/Tools/Flax.Build/Projects/VisualStudioCode/VisualStudioCodeProjectGenerator.cs b/Source/Tools/Flax.Build/Projects/VisualStudioCode/VisualStudioCodeProjectGenerator.cs
index d3f5faca4..82407f1ea 100644
--- a/Source/Tools/Flax.Build/Projects/VisualStudioCode/VisualStudioCodeProjectGenerator.cs
+++ b/Source/Tools/Flax.Build/Projects/VisualStudioCode/VisualStudioCodeProjectGenerator.cs
@@ -344,8 +344,7 @@ namespace Flax.Build.Projects.VisualStudioCode
                                         {
                                             if (configuration.Platform == TargetPlatform.Linux || configuration.Platform == TargetPlatform.Mac)
                                                 json.AddUnnamedField("-std");
-                                            json.AddUnnamedField("-project");
-                                            json.AddUnnamedField(buildToolWorkspace);
+                                            json.AddUnnamedField($"-project=\"{buildToolWorkspace}\"");
                                             json.AddUnnamedField("-skipCompile");
                                             if (hasMonoProjects)
                                             {
@@ -399,8 +398,7 @@ namespace Flax.Build.Projects.VisualStudioCode
                                         {
                                             if (configuration.Platform == TargetPlatform.Linux || configuration.Platform == TargetPlatform.Mac)
                                                 json.AddUnnamedField("-std");
-                                            json.AddUnnamedField("-project");
-                                            json.AddUnnamedField(buildToolWorkspace);
+                                            json.AddUnnamedField($"-project=\"{buildToolWorkspace}\"");
                                             json.AddUnnamedField("-skipCompile");
                                         }
                                         json.EndArray();