diff --git a/src/test/kernel/test_kernel.cpp b/src/test/kernel/test_kernel.cpp
index 8b919c918fb..884c6912bf5 100644
--- a/src/test/kernel/test_kernel.cpp
+++ b/src/test/kernel/test_kernel.cpp
@@ -7,6 +7,8 @@
 #include <util/byte_units.h>
 #include <util/fs.h>
 
+// Boost.Test's SIGSTKSZ alternate stack can be smaller than Linux requires on musl.
+#define BOOST_TEST_DISABLE_ALT_STACK
 #define BOOST_TEST_MODULE Bitcoin Kernel Test Suite
 #include <boost/test/included/unit_test.hpp>
 
diff --git a/src/test/main.cpp b/src/test/main.cpp
index 398ab4d6bd7..ae64d814562 100644
--- a/src/test/main.cpp
+++ b/src/test/main.cpp
@@ -5,6 +5,8 @@
 /**
  * See https://www.boost.org/doc/libs/1_78_0/libs/test/doc/html/boost_test/adv_scenarios/single_header_customizations/multiple_translation_units.html
  */
+// Boost.Test's SIGSTKSZ alternate stack can be smaller than Linux requires on musl.
+#define BOOST_TEST_DISABLE_ALT_STACK
 #define BOOST_TEST_MODULE Bitcoin Core Test Suite
 
 #include <boost/test/included/unit_test.hpp>