diff --git a/arch/alpha/faults.cc b/arch/alpha/faults.cc
index 1df0de7c1..5033f9fcd 100644
--- a/arch/alpha/faults.cc
+++ b/arch/alpha/faults.cc
@@ -28,6 +28,9 @@
 
 #include "arch/alpha/faults.hh"
 
+namespace AlphaISA
+{
+
 FaultName AlphaFault::_name = "alphafault";
 FaultVect AlphaFault::_vect = 0x0000;
 FaultStat AlphaFault::_stat;
@@ -92,6 +95,8 @@ FaultName IntegerOverflowFault::_name = "intover";
 FaultVect IntegerOverflowFault::_vect = 0x0501;
 FaultStat IntegerOverflowFault::_stat;
 
+} // namespace AlphaISA
+
 /*Fault * ListOfFaults[] = {
         (Fault *)&NoFault,
         (Fault *)&ResetFault,
diff --git a/arch/alpha/faults.hh b/arch/alpha/faults.hh
index 2004c0911..fedbadd4d 100644
--- a/arch/alpha/faults.hh
+++ b/arch/alpha/faults.hh
@@ -33,6 +33,9 @@
 
 // The design of the "name" and "vect" functions is in sim/faults.hh
 
+namespace AlphaISA
+{
+
 typedef const Addr FaultVect;
 
 class AlphaFault : public FaultBase
@@ -241,4 +244,6 @@ class IntegerOverflowFault : public AlphaFault
     FaultStat & stat() {return _stat;}
 };
 
+} // AlphaISA namespace
+
 #endif // __FAULTS_HH__