diff --git a/lib/dns/rdata/generic/ninfo_56.c b/lib/dns/rdata/generic/ninfo_56.c
index 3f018197b2..cd088b3057 100644
--- a/lib/dns/rdata/generic/ninfo_56.c
+++ b/lib/dns/rdata/generic/ninfo_56.c
@@ -155,7 +155,7 @@ checknames_ninfo(ARGS_CHECKNAMES) {
 	return (ISC_TRUE);
 }
 
-static inline isc_result_t
+static inline int
 casecompare_ninfo(ARGS_COMPARE) {
 	return (compare_ninfo(rdata1, rdata2));
 }
diff --git a/lib/dns/rdata/generic/tkey_249.c b/lib/dns/rdata/generic/tkey_249.c
index e08034db69..42a6e722af 100644
--- a/lib/dns/rdata/generic/tkey_249.c
+++ b/lib/dns/rdata/generic/tkey_249.c
@@ -549,7 +549,7 @@ checknames_tkey(ARGS_CHECKNAMES) {
 	return (ISC_TRUE);
 }
 
-static inline isc_result_t
+static inline int
 casecompare_tkey(ARGS_COMPARE) {
 	return (compare_tkey(rdata1, rdata2));
 }
diff --git a/lib/dns/rdata/generic/txt_16.c b/lib/dns/rdata/generic/txt_16.c
index 2eb0e53d7f..832b72bf86 100644
--- a/lib/dns/rdata/generic/txt_16.c
+++ b/lib/dns/rdata/generic/txt_16.c
@@ -273,7 +273,7 @@ checknames_txt(ARGS_CHECKNAMES) {
 	return (ISC_TRUE);
 }
 
-static inline isc_result_t
+static inline int
 casecompare_txt(ARGS_COMPARE) {
 	return (compare_txt(rdata1, rdata2));
 }