diff --git a/clite/vi.js b/clite/vi.js
index 9ff2e34..9571ea6 100644
--- a/clite/vi.js
+++ b/clite/vi.js
@@ -39,13 +39,13 @@ Options:
 					return 0;
 					break;
 				default:
-					stdio.fprintf(io.stderr,'unknown argument: -%c',args[i][j]);
+					stdio.fprintf(io.stderr,'unknown argument: -%c\n',args[i][j]);
 				}
 			}
 		}else if (file == null) {
 			file = clite.resolvePath(args[i],false);
 		}else{
-			stdio.fprintf(io.stderr,'unknown argument: %s',args[i]);
+			stdio.fprintf(io.stderr,'unknown argument: %s\n',args[i]);
 		}
 	}
 
@@ -129,13 +129,13 @@ Options:
 
 	function prepFile(fd) {
 		if (!fd) {
-			stdio.write(io.stderr,'could not open file: '+file);
+			stdio.fprintf(io.stderr,'could not open file: %s\n',file);
 			io.exit(1);
 			return;
 		}
 		var st = stdio.fstatat(fd,0);
 		if ( !st || (st.type != stdio.types.FT_TEXT && st.type != stdio.types.FT_SCRIPT)) {
-			stdio.write(io.stderr,'can not read files of this type');
+			stdio.write(io.stderr,'can not read files of this type\n');
 				io.exit(1);
 			return;
 		}
@@ -264,13 +264,13 @@ Options:
 	}
 
 	if (file == null) {
-		stdio.write(io.stderr,'no file specified');
+		stdio.write(io.stderr,'no file specified\n');
 		return 1;
 	}
 
 	var fd = stdio.open(file,stdio.flags.O_RDONLY|stdio.flags.O_CREAT,prepFile);
 	if (!fd) {
-		stdio.write(io.stderr,'could not open file: '+file);
+		stdio.fprintf(io.stderr,'could not open file: %s\n',file);
 		return 1;
 	}