diff --git a/pykd/dbgmem.h b/pykd/dbgmem.h
index 9ac34a4..d798ad7 100644
--- a/pykd/dbgmem.h
+++ b/pykd/dbgmem.h
@@ -5,6 +5,7 @@ namespace pykd {
 ///////////////////////////////////////////////////////////////////////////////////
 
 ULONG64 addr64( ULONG64 offset );
+ULONG64 addr64NoSafe( ULONG64 addr );
 void readMemory( ULONG64 offset, PVOID buffer, ULONG length, bool phyAddr = FALSE, ULONG *readed = NULL );
 bool readMemoryUnsafe( ULONG64 offset, PVOID buffer, ULONG length, bool phyAddr = FALSE, ULONG *readed = NULL );
 bool isVaValid( ULONG64 addr );
diff --git a/pykd/win/dbgeng.cpp b/pykd/win/dbgeng.cpp
index 6b32982..3924b99 100644
--- a/pykd/win/dbgeng.cpp
+++ b/pykd/win/dbgeng.cpp
@@ -1172,7 +1172,7 @@ void setCurrentProcess( ULONG64 processAddr )
 
     HRESULT     hres;
 
-    processAddr = addr64(processAddr);
+    processAddr = addr64NoSafe(processAddr);
     hres = g_dbgEng->system->SetImplicitProcessDataOffset( processAddr );
     if ( FAILED( hres ) )
         throw DbgException( "IDebugSystemObjects2::SetImplicitProcessDataOffset  failed" );
@@ -1186,7 +1186,7 @@ void setImplicitThread( ULONG64 threadAddr )
 
     HRESULT  hres;
 
-    threadAddr = addr64(threadAddr);
+    threadAddr = addr64NoSafe(threadAddr);
     hres = g_dbgEng->system->SetImplicitThreadDataOffset( threadAddr );
     if ( FAILED( hres ) )
         throw DbgException( "IDebugSystemObjects2::SetImplicitThreadDataOffset  failed" );