diff --git a/lib/isc/include/isc/result.h b/lib/isc/include/isc/result.h
index b6b8735565..48ecd9d10e 100644
--- a/lib/isc/include/isc/result.h
+++ b/lib/isc/include/isc/result.h
@@ -17,6 +17,9 @@ typedef unsigned int isc_result_t;
 #define ISC_R_NETDOWN			10
 #define ISC_R_HOSTDOWN			11
 #define ISC_R_CONNREFUSED		12
+#define ISC_R_NORESOURCES		13	/* not enough resources */
+#define ISC_R_LAST_ENTRY		13	/* last entry in the file */
+
 #define ISC_R_UNEXPECTED		0xFFFFFFFFL
 
 #define isc_result_totext		__isc_result_totext
diff --git a/lib/isc/result.c b/lib/isc/result.c
index bfeef68fd2..d048dfa7f0 100644
--- a/lib/isc/result.c
+++ b/lib/isc/result.c
@@ -1,9 +1,7 @@
 
 #include <isc/result.h>
 
-#define LAST_ENTRY	ISC_R_CONNREFUSED
-
-static char *text_table[LAST_ENTRY+1] = {
+static char *text_table[ISC_R_LAST_ENTRY + 1] = {
 	"success",
 	"out of memory",
 	"timed out",
@@ -17,13 +15,14 @@ static char *text_table[LAST_ENTRY+1] = {
 	"network down",
 	"host down",
 	"connection refused",
+	"not enough free resources",
 };
 
 char *
 isc_result_totext(isc_result_t result) {
 	if (result == ISC_R_UNEXPECTED)
 		return ("unexpected error");
-	if (result > LAST_ENTRY)
+	if (result > ISC_R_LAST_ENTRY)
 		return ("unknown result code");
 	return (text_table[result]);
 }