diff --git a/code/scrypt-jane-portable-x86.h b/code/scrypt-jane-portable-x86.h
index 396a7bd..e7858cd 100644
--- a/code/scrypt-jane-portable-x86.h
+++ b/code/scrypt-jane-portable-x86.h
@@ -459,4 +459,11 @@ get_top_cpuflag_desc(size_t flag) {
 	#endif
 #endif
 
-#endif /* defined(CPU_X86) || defined(CPU_X86_64) */
\ No newline at end of file
+#else
+
+static size_t
+detect_cpu(void) {
+	return 0;
+}
+
+#endif /* defined(CPU_X86) || defined(CPU_X86_64) */