diff --git a/config.h b/config.h
index 191c5da..2109136 100644
--- a/config.h
+++ b/config.h
@@ -6,21 +6,24 @@
 #define ENABLE_DPD
 #define ENABLE_HYBRID
 
-#define HAVE_OPENSSL_AES_H
+#define HAVE_OPENSSL_AES_H 1
 #undef HAVE_OPENSSL_ENGINE_H
-#define WITH_SHA2
-#define HAVE_SHA2_IN_SHA_H
+#define WITH_SHA2 1
+#define HAVE_SHA2_IN_SHA_H 1
 
 #undef INET6
 #undef INET6_ADVAPI
 
 #define PATH_IPSEC_H <netinet/ipsec.h>
-#define HAVE_POLICY_FWD
-#define HAVE_PFKEY_POLICY_PRIORITY
+#define HAVE_POLICY_FWD 1
+#define HAVE_PFKEY_POLICY_PRIORITY 1
 
 #define TIME_WITH_SYS_TIME 1
 #define HAVE_SYS_TIME_H 1
-#define HAVE_UNISTD_H
+#define HAVE_UNISTD_H 1
+
+#define HAVE_STRLCAT 1
+#define HAVE_STRLCPY 1
 
 #define RETSIGTYPE void