diff --git a/src/crypto/rfc3961/context.c b/src/crypto/rfc3961/context.c
index 741c8cf966..434fe974a3 100644
--- a/src/crypto/rfc3961/context.c
+++ b/src/crypto/rfc3961/context.c
@@ -6,3 +6,16 @@ int
 krb5_init_context(krb5_context *ctx) {
     return 0;
 }
+
+void
+krb5_set_error_message(krb5_context ctx, krb5_error_code ret, const char *fmt,
+		       ...)
+{
+    return;
+}
+
+krb5_error_code
+krb5_abortx(krb5_context ctx, const char *fmt, ...)
+{
+    return;
+}
diff --git a/src/crypto/rfc3961/krb5_locl.h b/src/crypto/rfc3961/krb5_locl.h
index 5c4af4b981..a3eae68e26 100644
--- a/src/crypto/rfc3961/krb5_locl.h
+++ b/src/crypto/rfc3961/krb5_locl.h
@@ -130,9 +130,13 @@ typedef struct krb5_crypto_iov {
 
 /* Currently, we just disable localised error strings. We'll get the error
  * numbers out, but no meaningful text */
-#define N_(...) ""
-#define krb5_set_error_message(...)
-#define krb5_abortx(...)
+#define N_(X, Y) X
+
+/* These have to be real functions, because IRIX doesn't seem to support
+ * variadic macros */
+void krb5_set_error_message(krb5_context, krb5_error_code, const char *, ...);
+krb5_error_code krb5_abortx(krb5_context, const char *, ...);
+
 #define krb5_clear_error_message(ctx)
 
 /* Local prototypes. These are functions that we aren't admitting to in the