diff --git a/libraries/AP_Filesystem/AP_Filesystem_Sys.cpp b/libraries/AP_Filesystem/AP_Filesystem_Sys.cpp
index 2898539173..31d5265f35 100644
--- a/libraries/AP_Filesystem/AP_Filesystem_Sys.cpp
+++ b/libraries/AP_Filesystem/AP_Filesystem_Sys.cpp
@@ -98,7 +98,7 @@ int AP_Filesystem_Sys::open(const char *fname, int flags, bool allow_absolute_pa
     if (strcmp(fname, "threads.txt") == 0) {
         hal.util->thread_info(*r.str);
     }
-#if HAL_SCHEDULER_ENABLED
+#if AP_SCHEDULER_ENABLED
     if (strcmp(fname, "tasks.txt") == 0) {
         AP::scheduler().task_info(*r.str);
     }