diff --git a/test/core/util/test_config.c b/test/core/util/test_config.c
index 76b2cbd4d4d..30caf4b1ef8 100644
--- a/test/core/util/test_config.c
+++ b/test/core/util/test_config.c
@@ -89,7 +89,7 @@ static void install_crash_handler() {
 #include <string.h>
 #include <grpc/support/useful.h>
 
-static char g_alt_stack[8192];
+static char g_alt_stack[MINSIGSTKSZ];
 
 #define MAX_FRAMES 32