diff --git a/crypto/des/asm/des_enc.m4 b/crypto/des/asm/des_enc.m4
index 5d323d02c565ed91b2b8a76425cb12ac2f084047..546043b1013914d03e3a9c18e0eb5f7340d5d373 100644
--- a/crypto/des/asm/des_enc.m4
+++ b/crypto/des/asm/des_enc.m4
@@ -46,6 +46,8 @@
 .ident "des_enc.m4 2.1"
 .file  "des_enc-sparc.S"
 
+#include <openssl/opensslconf.h>
+
 #ifdef OPENSSL_FIPSCANISTER
 #include <openssl/fipssyms.h>
 #endif