diff --git a/Zend/Zend.m4 b/Zend/Zend.m4
index 2f56cb266cc4e..c87e51a053b12 100644
--- a/Zend/Zend.m4
+++ b/Zend/Zend.m4
@@ -169,7 +169,6 @@ int main(void) {
     return f((uintptr_t)&local) ? 0 : 1;
 }
 ]])], [
-  AC_DEFINE([ZEND_STACK_GROWS_DOWNWARDS], 1, [Define if the stack grows downwards])
   AC_DEFINE([ZEND_CHECK_STACK_LIMIT], 1, [Define if checking the stack limit is supported])
   AC_MSG_RESULT(yes)
 ], [
diff --git a/win32/build/config.w32 b/win32/build/config.w32
index d7843cd823a1c..2823cfe4a0785 100644
--- a/win32/build/config.w32
+++ b/win32/build/config.w32
@@ -303,7 +303,6 @@ if (VS_TOOLSET && VCVERS >= 1914) {
 
 AC_DEFINE('HAVE_STRNLEN', 1);
 
-AC_DEFINE('ZEND_STACK_GROWS_DOWNWARDS', 1)
 AC_DEFINE('ZEND_CHECK_STACK_LIMIT', 1)
 
 ADD_SOURCES("main/streams", "streams.c cast.c memory.c filter.c plain_wrapper.c \