diff --git a/UnionPatcher.Gui/MainForm.cs b/UnionPatcher.Gui/MainForm.cs
index cd650c0..e35daa6 100644
--- a/UnionPatcher.Gui/MainForm.cs
+++ b/UnionPatcher.Gui/MainForm.cs
@@ -72,17 +72,17 @@ namespace LBPUnion.UnionPatcher.Gui {
                 ElfFile eboot = new(this.filePicker.FilePath);
 
                 if(eboot.IsValid == false) {
-                    this.CreateOkDialog("Eboot Error", $"{eboot.Name} is not a valid ELF file (magic number mismatch)\nThe EBOOT must be decrypted before using this tool").ShowModal();
+                    this.CreateOkDialog("EBOOT Error", $"{eboot.Name} is not a valid ELF file (magic number mismatch)\nThe EBOOT must be decrypted before using this tool").ShowModal();
                     return;
                 }
 
                 if(eboot.Is64Bit == null) {
-                    this.CreateOkDialog("Eboot Error", $"{eboot.Name} does not target a valid system").ShowModal();
+                    this.CreateOkDialog("EBOOT Error", $"{eboot.Name} does not target a valid system").ShowModal();
                     return;
                 }
 
                 if(string.IsNullOrWhiteSpace(eboot.Architecture)) {
-                    this.CreateOkDialog("Eboot Error", $"{eboot.Name} does not target a valid architecture (PowerPC or ARM)").ShowModal();
+                    this.CreateOkDialog("EBOOT Error", $"{eboot.Name} does not target a valid architecture (PowerPC or ARM)").ShowModal();
                     return;
                 }
 
diff --git a/UnionPatcher/ElfFile.cs b/UnionPatcher/ElfFile.cs
index 6a24bfc..1fb4f5b 100644
--- a/UnionPatcher/ElfFile.cs
+++ b/UnionPatcher/ElfFile.cs
@@ -27,7 +27,7 @@ namespace LBPUnion.UnionPatcher {
 
         public string Name { get; } = "Binary Blob";
 
-        public bool IsValid { get; }
+        public bool IsValid { get; } = false;
         public bool? Is64Bit { get; } = null;
         public bool? IsBigEndian { get; } = null;
         public string Architecture { get; } = null;
@@ -35,10 +35,8 @@ namespace LBPUnion.UnionPatcher {
         public byte[] Contents { get; } = null;
 
         public ElfFile(byte[] fileContents) {
-			if(fileContents.length < 52) {
-				IsValid = false;
+			if(fileContents.Length < 52)
 				return;
-			}
 
             IsValid = fileContents[0x00..0x04].SequenceEqual(new byte[] {0x7F, (byte)'E', (byte)'L', (byte)'F'});
             if(!IsValid) return;