diff --git a/bind-9.10-use-of-strlcat.patch b/bind-9.10-use-of-strlcat.patch
deleted file mode 100644
index 2a39916..0000000
--- a/bind-9.10-use-of-strlcat.patch
+++ /dev/null
@@ -1,18 +0,0 @@
-diff --git a/bin/sdb_tools/zone2ldap.c b/bin/sdb_tools/zone2ldap.c
-index d56bc56..99c3314 100644
---- a/bin/sdb_tools/zone2ldap.c
-+++ b/bin/sdb_tools/zone2ldap.c
-@@ -817,11 +817,11 @@ build_dn_from_dc_list (char **dc_list, unsigned int ttl, int flag, char *zone)
-     }
- 
- 
--      strlcat (dn, tmp, sizeof (dn));
-+      strncat (dn, tmp, sizeof (dn) - strlen (dn));
-     }
- 
-   sprintf (tmp, "dc=%s", dc_list[0]);
--  strlcat (dn, tmp, sizeof (dn));
-+  strncat (dn, tmp, sizeof (dn) - strlen (dn));
- 
- 	    fflush(NULL);
-   return dn;
diff --git a/bind.spec b/bind.spec
index 6c9bcfa..3ecc99a 100644
--- a/bind.spec
+++ b/bind.spec
@@ -113,9 +113,6 @@ Patch136:bind-9.10-dist-native-pkcs11.patch
 # Do not use isc-pkcs11.
 Patch149:bind-9.11-kyua-pkcs11.patch
 
-# [ISC-Bugs #42525] non-portable use of strlcat in contrib/sdb/ldap/zone2ldap.c
-# introduced by https://source.isc.org/cgi-bin/gitweb.cgi?p=bind9.git;a=commit;h=fc9f0ac5778f78003a7acc957a23711811fec122
-Patch137:bind-9.10-use-of-strlcat.patch
 Patch140:bind-9.11-rh1410433.patch
 Patch157:bind-9.11-fips-tests.patch
 Patch164:bind-9.11-rh1666814.patch
@@ -449,7 +446,6 @@ cp -r lib/ns{,-pkcs11}
 %endif
 
 %patch133 -p1 -b .rh640538
-#%patch134 -p1 -b .rh669163
 
 # Sparc and s390 arches need to use -fPIE
 %ifarch sparcv9 sparc64 s390 s390x
@@ -691,7 +687,7 @@ install -m 644 %{SOURCE47} ${RPM_BUILD_ROOT}%{_unitdir}
 %else
 # Not packaged without PKCS11
 find ${RPM_BUILD_ROOT}%{_includedir}/bind9/pk11 ${RPM_BUILD_ROOT}%{_includedir}/bind9/pkcs11 \
-	 -name '*.h' \! -name site.h -delete
+  -name '*.h' \! -name site.h -delete
 
 %endif