diff --git a/build_tools/cflags.xml b/build_tools/cflags.xml
index f4725cbd9d..3bb1393f4f 100644
--- a/build_tools/cflags.xml
+++ b/build_tools/cflags.xml
@@ -13,8 +13,6 @@
 		</member>
 		<member name="-DRADIO_RELAX">
 		</member>
-		<member name="-DSTACK_BACKTRACES">
-		</member>
 		<member name="-DTRACE_FRAMES">
 		</member>
 		<member name="-DMTX_PROFILE">