diff --git a/lib/dns/rdata.c b/lib/dns/rdata.c
index 3d7caf328c..92f1637c44 100644
--- a/lib/dns/rdata.c
+++ b/lib/dns/rdata.c
@@ -15,7 +15,7 @@
  * SOFTWARE.
  */
 
- /* $Id: rdata.c,v 1.9 1999/01/22 00:36:54 marka Exp $ */
+ /* $Id: rdata.c,v 1.10 1999/01/22 00:38:47 marka Exp $ */
 
 #include <isc/buffer.h>
 #include <isc/lex.h>
@@ -28,11 +28,11 @@
 #include <stdio.h>
 #include <isc/assertions.h>
 
-#define RETERR(x) { \
+#define RETERR(x) do { \
 	dns_result_t __r = (x); \
 	if (__r != DNS_R_SUCCESS) \
 		return (__r); \
-	}
+	} while (0)
 
 static dns_result_t	txt_totext(isc_region_t *source, isc_buffer_t *target);
 static dns_result_t	txt_fromtext(isc_textregion_t *source,