diff --git a/libraries/AP_Filesystem/AP_Filesystem_config.h b/libraries/AP_Filesystem/AP_Filesystem_config.h
index 63cf31f208..a184051610 100644
--- a/libraries/AP_Filesystem/AP_Filesystem_config.h
+++ b/libraries/AP_Filesystem/AP_Filesystem_config.h
@@ -34,7 +34,7 @@
 #define AP_FILESYSTEM_SYS_ENABLED 1
 #endif
 
-// AP_FILESYSTEM_FILE_READING_ENABLED is true if you could expect to
+// AP_FILESYSTEM_FILE_WRITING_ENABLED is true if you could expect to
 // be able to open and write a non-virtual file.  Notably this
 // excludes virtual files like SYSFS, and the magic param/mission
 // upload targets, and also excludes ROMFS (where you can read but not