diff --git a/orchestra/apps/domains/backends.py b/orchestra/apps/domains/backends.py
index 0e18e5a0..8af24edf 100644
--- a/orchestra/apps/domains/backends.py
+++ b/orchestra/apps/domains/backends.py
@@ -42,7 +42,7 @@ class Bind9MasterDomainBackend(ServiceController):
         self.append(textwrap.dedent("""\
             cat -s <(sed -e 's/^};/};\\n/' %(conf_path)s) | \\
                 awk -v s=pangea.cat 'BEGIN { RS=""; s="zone \\""s"\\"" } $0~s{ print }' | \\
-            diff -I"^\s*//" - <(echo '%(conf)s') || {
+            diff -B -I"^\s*//" - <(echo '%(conf)s') || {
                 cat -s <(sed -e 's/^};/};\\n/' %(conf_path)s) | \\
                     awk -v s="%(name)s" 'BEGIN { RS=""; s="zone \\""s"\\"" } $0!~s{ print $0"\\n" }' \\
                     > %(conf_path)s.tmp
@@ -69,7 +69,7 @@ class Bind9MasterDomainBackend(ServiceController):
                 awk -v s="%(name)s" 'BEGIN { RS=""; s="zone \\""s"\\"" } $0!~s{ print $0"\\n" }' \\
                 > %(conf_path)s.tmp""" % context
         ))
-        self.append('diff -I"^\s*//" %(conf_path)s.tmp %(conf_path)s || UPDATED=1' % context)
+        self.append('diff -B -I"^\s*//" %(conf_path)s.tmp %(conf_path)s || UPDATED=1' % context)
         self.append('mv %(conf_path)s.tmp %(conf_path)s' % context)
     
     def commit(self):