Index: src/OFFile.m
==================================================================
--- src/OFFile.m
+++ src/OFFile.m
@@ -29,10 +29,12 @@
 
 #ifndef O_BINARY
 # define O_BINARY 0
 #endif
 
+#define DEFAULT_MODE S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH
+
 OFFile *of_stdin = nil;
 OFFile *of_stdout = nil;
 OFFile *of_stderr = nil;
 
 static int parse_mode(const char *mode)
@@ -197,11 +199,11 @@
 		[super dealloc];
 		@throw [OFInvalidArgumentException newWithClass: c
 						       selector: _cmd];
 	}
 
-	if ((fd = open([path cString], flags)) == -1) {
+	if ((fd = open([path cString], flags, DEFAULT_MODE)) == -1) {
 		c = isa;
 		[super dealloc];
 		@throw [OFOpenFileFailedException newWithClass: c
 							  path: path
 							  mode: mode];