diff --git a/pygoscelis-config b/pygoscelis-config
index 2fc4562..4f2cc0c 100644
--- a/pygoscelis-config
+++ b/pygoscelis-config
@@ -474,7 +474,7 @@ CONFIG_HOTPLUG_CPU=y
 CONFIG_LEGACY_VSYSCALL_NONE=y
 # CONFIG_CMDLINE_BOOL is not set
 # CONFIG_MODIFY_LDT_SYSCALL is not set
-# CONFIG_STRICT_SIGALTSTACK_SIZE is not set
+CONFIG_STRICT_SIGALTSTACK_SIZE=y
 CONFIG_HAVE_LIVEPATCH=y
 # end of Processor type and features