diff --git a/crypto/des/asm/des_enc.m4 b/crypto/des/asm/des_enc.m4
index db7eb62138beea7f36ffd2c7c0f5850388a4bd13..fce6d6b9e31e4cf41c82f2af2b6dda29f55c2da8 100644
--- a/crypto/des/asm/des_enc.m4
+++ b/crypto/des/asm/des_enc.m4
@@ -108,6 +108,7 @@
 #define out6 %o6
 #define out7 %o7
 
+#define stub stb
 
 changequote({,})