--- a/src/callbacks.h
+++ b/src/callbacks.h
@@ -12,6 +12,7 @@
 #define SYSTEM_FILE_2      "/usr/lib/X11/rgb.txt"
 #define SYSTEM_FILE_3      "/etc/X11/rgb.txt"
 #define SYSTEM_FILE_4      "/usr/openwin/lib/X11/rgb.txt"
+#define SYSTEM_FILE_5      "/usr/share/X11/rgb.txt"
 
 /* about dialog text */
 #define ABOUT_CREDITS_TEXT "Developer:\n" \
--- a/src/main.c
+++ b/src/main.c
@@ -36,6 +36,8 @@
 		sys_filename = SYSTEM_FILE_3;
 	else if (g_file_test (SYSTEM_FILE_4, G_FILE_TEST_EXISTS))
 		sys_filename = SYSTEM_FILE_4;
+	else if (g_file_test (SYSTEM_FILE_5, G_FILE_TEST_EXISTS))
+		sys_filename = SYSTEM_FILE_5;
 	else
 		return FALSE;
 	return TRUE;