diff --git a/Android.bp b/Android.bp
index 9913028..10ffe49 100644
--- a/Android.bp
+++ b/Android.bp
@@ -247,12 +247,11 @@
         "ncurses/names.c",
         "ncurses/unctrl.c",
     ],
+    c_std: "c17",
     cflags: [
         "-DHAVE_CONFIG_H",
-        "-U_XOPEN_SOURCE",
-        "-D_XOPEN_SOURCE=500",
-        "-U_POSIX_C_SOURCE",
-        "-D_POSIX_C_SOURCE=199506L",
+        "-D_DEFAULT_SOURCE",
+        "-D_XOPEN_SOURCE=600",
         "-DNDEBUG",
         "-Wno-unused-parameter",
     ],