* can share a fair amount of code between different variants. */
#if defined __FreeBSD__
#define CONTEXT_ADDR_FROM_STEM(stem) &context->uc_mcontext.mc_ ## stem
-#elif defined __OpenBSD__
+#elif defined(__OpenBSD__)
#define CONTEXT_ADDR_FROM_STEM(stem) &context->sc_ ## stem
#elif defined __NetBSD__
#define CONTEXT_ADDR_FROM_STEM(stem) &((context)->uc_mcontext.__gregs[_REG_ ## stem])