diff --git a/src/dev/net/Ethernet.py b/src/dev/net/Ethernet.py
index 53cc035281..dc29ce6124 100644
--- a/src/dev/net/Ethernet.py
+++ b/src/dev/net/Ethernet.py
@@ -229,7 +229,7 @@ class NSGigE(EtherDevBase):
 
 class Sinic(EtherDevBase):
     type = 'Sinic'
-    cxx_class = 'Sinic::Device'
+    cxx_class = 'sinic::Device'
     cxx_header = "dev/net/sinic.hh"
 
     rx_max_copy = Param.MemorySize('1514B', "rx max copy")
diff --git a/src/dev/net/sinic.cc b/src/dev/net/sinic.cc
index b893b4917c..e0fed58bf6 100644
--- a/src/dev/net/sinic.cc
+++ b/src/dev/net/sinic.cc
@@ -45,7 +45,9 @@
 
 using namespace Net;
 
-namespace Sinic {
+GEM5_DEPRECATED_NAMESPACE(Sinic, sinic);
+namespace sinic
+{
 
 const char *RxStateStrings[] =
 {
@@ -1486,4 +1488,4 @@ Device::unserialize(CheckpointIn &cp)
 
 }
 
-} // namespace Sinic
+} // namespace sinic
diff --git a/src/dev/net/sinic.hh b/src/dev/net/sinic.hh
index 2230a77425..750b6821f0 100644
--- a/src/dev/net/sinic.hh
+++ b/src/dev/net/sinic.hh
@@ -29,6 +29,7 @@
 #ifndef __DEV_NET_SINIC_HH__
 #define __DEV_NET_SINIC_HH__
 
+#include "base/compiler.hh"
 #include "base/inet.hh"
 #include "base/statistics.hh"
 #include "dev/io_device.hh"
@@ -41,7 +42,9 @@
 #include "params/Sinic.hh"
 #include "sim/eventq.hh"
 
-namespace Sinic {
+GEM5_DEPRECATED_NAMESPACE(Sinic, sinic);
+namespace sinic
+{
 
 class Interface;
 class Base : public EtherDevBase
@@ -319,6 +322,6 @@ class Interface : public EtherInt
     virtual void sendDone() { dev->transferDone(); }
 };
 
-} // namespace Sinic
+} // namespace sinic
 
 #endif // __DEV_NET_SINIC_HH__
diff --git a/src/dev/net/sinicreg.hh b/src/dev/net/sinicreg.hh
index 97154db0be..55fca69691 100644
--- a/src/dev/net/sinicreg.hh
+++ b/src/dev/net/sinicreg.hh
@@ -52,7 +52,9 @@
         static inline uint64_t set_##NAME(uint64_t reg, uint64_t val) \
         { return (reg & ~NAME) | ((val << OFFSET) & NAME); }
 
-namespace Sinic {
+GEM5_DEPRECATED_NAMESPACE(Sinic, sinic);
+namespace sinic
+{
 namespace Regs {
 
 static const int VirtualShift = 8;
@@ -232,6 +234,6 @@ regValid(Addr daddr)
     return true;
 }
 
-} // namespace Sinic
+} // namespace sinic
 
 #endif // __DEV_NET_SINICREG_HH__