diff -uNr boinc/lib/prefs.cpp boinc.mod/lib/prefs.cpp
--- boinc/lib/prefs.cpp	2022-07-18 18:32:21.000000000 +0800
+++ boinc.mod/lib/prefs.cpp	2022-09-11 21:07:05.387844109 +0800
@@ -221,7 +221,7 @@
     max_bytes_sec_down = 0;
     max_bytes_sec_up = 0;
     max_ncpus = 0;
-#ifdef ANDROID
+#ifdef __ANDROID__
     max_ncpus_pct = 50;
 #else
     max_ncpus_pct = 0;