Arduino UNO TFT 2.4 inch error

Arduino: 1.6.3 (Windows XP), Board: "Arduino Uno"

C:\Documents and Settings\user\My Documents\Arduino\libraries\TFTLCD\glcdfont.c:9:23: error: variable 'font' must be const in order to be put into read-only section by means of '__attribute__((progmem))'

 static unsigned char  font[] PROGMEM = {

                       ^

Error compiling.

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This is my error.
I am using the TFTLCD library mentioned and up for download here.