diff --git a/src/apps/magnify/Magnify.cpp b/src/apps/magnify/Magnify.cpp
index 3bcb76f73a..f54eccc5b1 100644
--- a/src/apps/magnify/Magnify.cpp
+++ b/src/apps/magnify/Magnify.cpp
@@ -494,7 +494,7 @@ TWindow::SetPrefs()
 		long ref;
 
 		path.Append (kPrefsFileName);
-		if ((ref = creat(path.Path(), O_RDWR)) >= 0) {
+		if ((ref = creat(path.Path(), S_IRUSR | S_IWUSR)) >= 0) {
 			float version = kCurrentVersion;
 
 			lseek (ref, 0, SEEK_SET);
@@ -1683,7 +1683,7 @@ TMagnify::SaveImage(entry_ref* ref, char* name, bool selectionOnly)
 
 
 void
-TMagnify::SaveBits(BFile* file, const BBitmap *bitmap, char* name) const
+TMagnify::SaveBits(BFile* file, const BBitmap *bitmap, const char* name) const
 {
 	int32 bytesPerPixel;
 	const char *kColorSpaceName;
diff --git a/src/apps/magnify/Magnify.h b/src/apps/magnify/Magnify.h
index ae9d06d8db..c9388dd4b1 100644
--- a/src/apps/magnify/Magnify.h
+++ b/src/apps/magnify/Magnify.h
@@ -114,7 +114,8 @@ class TMagnify : public BView {
 
 		void			StartSave();
 		void			SaveImage(entry_ref* ref, char* name, bool selectionOnly=false);
-		void 			SaveBits(BFile* file, const BBitmap *bitmap, char* name) const;
+		void 			SaveBits(BFile* file, const BBitmap *bitmap,
+							const char* name) const;
 		void			EndSave();
 
 	private: