diff --git a/ParserGenApp/PGDocument.m b/ParserGenApp/PGDocument.m
index 2f9f99b..c47c3be 100644
--- a/ParserGenApp/PGDocument.m
+++ b/ParserGenApp/PGDocument.m
@@ -72,6 +72,7 @@ - (NSString *)windowNibName {
 - (void)windowControllerDidLoadNib:(NSWindowController *)wc {
     [super windowControllerDidLoadNib:wc];
     
+    [_textView setEnabledTextCheckingTypes:0];
     [_textView setFont:[NSFont fontWithName:@"Monaco" size:12.0]];
 }