--- tdebase/tdeioslave/media/mediamanager/tdehardwarebackend.cpp.new	2013-11-11 21:27:09.960234089 +0100
+++ tdebase/tdeioslave/media/mediamanager/tdehardwarebackend.cpp	2013-11-11 21:32:16.081679386 +0100
@@ -979,9 +979,21 @@
 	}
 
 	if (valids.contains("utf8")) {
-		value = config.readBoolEntry("utf8", true);
+		// From "man mount": only some filesystems support 'iocharset' option.
+		if( (sdevice->fileSystemName() == "fat")
+		 || (sdevice->fileSystemName() == "iso9660")
+		 || (sdevice->fileSystemName() == "jfs")
+		 || (sdevice->fileSystemName() == "msdos")
+		 || (sdevice->fileSystemName() == "ntfs")
+		 || (sdevice->fileSystemName() == "umsdos")
+		 || (sdevice->fileSystemName() == "vfat")
+		) {
+			value = false; //config.readBoolEntry("utf8", true);
+		} else {
+			value = false;
+       }
 		tmp = TQString("utf8=%1").arg(value ? "true" : "false");
 		result << tmp;
 	}
 
 	if (valids.contains("shortname")) {