diff --git a/src/lib/dhcp/pkt4.cc b/src/lib/dhcp/pkt4.cc
index cae19d0754..e1e6673499 100644
--- a/src/lib/dhcp/pkt4.cc
+++ b/src/lib/dhcp/pkt4.cc
@@ -143,7 +143,7 @@ Pkt4::pack() {
         // write DHCP magic cookie
         buffer_out_.writeUint32(DHCP_OPTIONS_COOKIE);
 
-        LibDHCP::packOptions(buffer_out_, options_);
+        LibDHCP::packOptions4(buffer_out_, options_);
 
         // add END option that indicates end of options
         // (End option is very simple, just a 255 octet)
diff --git a/src/lib/dhcp/pkt6.cc b/src/lib/dhcp/pkt6.cc
index 33b4633722..6f95ef930a 100644
--- a/src/lib/dhcp/pkt6.cc
+++ b/src/lib/dhcp/pkt6.cc
@@ -244,7 +244,7 @@ Pkt6::packUDP() {
         buffer_out_.writeUint8( (transid_) & 0xff );
 
         // the rest are options
-        LibDHCP::packOptions(buffer_out_, options_);
+        LibDHCP::packOptions6(buffer_out_, options_);
     }
     catch (const Exception& e) {
        // An exception is thrown and message will be written to Logger
diff --git a/src/lib/dhcp/tests/libdhcp++_unittest.cc b/src/lib/dhcp/tests/libdhcp++_unittest.cc
index 66bac96e4e..8b11343f86 100644
--- a/src/lib/dhcp/tests/libdhcp++_unittest.cc
+++ b/src/lib/dhcp/tests/libdhcp++_unittest.cc
@@ -396,7 +396,7 @@ TEST_F(LibDhcpTest, packOptions6) {
 
     OutputBuffer assembled(512);
 
-    EXPECT_NO_THROW(LibDHCP::packOptions(assembled, opts));
+    EXPECT_NO_THROW(LibDHCP::packOptions6(assembled, opts));
     EXPECT_EQ(sizeof(v6packed), assembled.getLength());
     EXPECT_EQ(0, memcmp(assembled.getData(), v6packed, sizeof(v6packed)));
 }
@@ -591,7 +591,7 @@ TEST_F(LibDhcpTest, packOptions4) {
     opts.insert(make_pair(opt1->getType(), rai));
 
     OutputBuffer buf(100);
-    EXPECT_NO_THROW(LibDHCP::packOptions(buf, opts));
+    EXPECT_NO_THROW(LibDHCP::packOptions4(buf, opts));
     ASSERT_EQ(buf.getLength(), sizeof(v4_opts));
     EXPECT_EQ(0, memcmp(v4_opts, buf.getData(), sizeof(v4_opts)));
 }