diff --git a/src/storage/zone.cr b/src/storage/zone.cr
index 3cd1e3f..3538f10 100644
--- a/src/storage/zone.cr
+++ b/src/storage/zone.cr
@@ -236,11 +236,11 @@ class DNSManager::Storage::Zone
 
 		def to_s(io : IO)
 			io << "(#{ "%4d" % @rrid }) "
-			io << "#{ "%.30s" % @name} #{ "%6d" % @ttl} #{ "%.10s" % @rrtype } #{quoted_string @target}\n"
+			io << "#{ "%.30s" % @name} #{ "%6d" % @ttl} #{ "%.10s" % @rrtype } #{quoted_string escape_double_quotes @target}\n"
 		end
 
 		def to_bind9(io : IO)
-			io << "#{@name} #{@ttl} IN #{@rrtype} #{split_line @target}\n"
+			io << "#{@name} #{@ttl} IN #{@rrtype} #{split_line escape_double_quotes @target}\n"
 		end
 	end
 
@@ -1110,3 +1110,7 @@ def quoted_string(value : String) : String
 		io << '"'
 	end
 end
+
+def escape_double_quotes(value : String)
+	value.gsub '"', %[\\"]
+end