diff --git a/dll/directx/ksproxy/datatype.cpp b/dll/directx/ksproxy/datatype.cpp
index 91fe76a21dc..7f55efc06ed 100644
--- a/dll/directx/ksproxy/datatype.cpp
+++ b/dll/directx/ksproxy/datatype.cpp
@@ -9,9 +9,7 @@
 #include "precomp.h"
 
 /* FIXME guid mess */
-#ifndef _MSC_VER
 const GUID IID_IUnknown           = {0x00000000, 0x0000, 0x0000, {0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46}};
-#endif
 const GUID IID_IClassFactory      = {0x00000001, 0x0000, 0x0000, {0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46}};
 
 class CKsDataTypeHandler : public IKsDataTypeHandler
diff --git a/dll/directx/ksproxy/ksproxy.cpp b/dll/directx/ksproxy/ksproxy.cpp
index 9a034e1f754..9509f701ff2 100644
--- a/dll/directx/ksproxy/ksproxy.cpp
+++ b/dll/directx/ksproxy/ksproxy.cpp
@@ -13,11 +13,7 @@
 
 const GUID CLSID_KsClockForwarder              = {0x877e4351, 0x6fea, 0x11d0, {0xb8, 0x63, 0x00, 0xaa, 0x00, 0xa2, 0x16, 0xa1}};
 const GUID CLSID_KsQualityForwarder            = {0xe05592e4, 0xc0b5, 0x11d0, {0xa4, 0x39, 0x00, 0xa0, 0xc9, 0x22, 0x31, 0x96}};
-
-
-#ifndef _MSC_VER
 const GUID CLSID_KsIBasicAudioInterfaceHandler = {0xb9f8ac3e, 0x0f71, 0x11d2, {0xb7, 0x2c, 0x00, 0xc0, 0x4f, 0xb6, 0xbd, 0x3d}};
-#endif
 
 static INTERFACE_TABLE InterfaceTable[] =
 {
diff --git a/dll/directx/ksproxy/proxy.cpp b/dll/directx/ksproxy/proxy.cpp
index 25b00fe6667..940d6e61bdd 100644
--- a/dll/directx/ksproxy/proxy.cpp
+++ b/dll/directx/ksproxy/proxy.cpp
@@ -8,12 +8,10 @@
  */
 #include "precomp.h"
 
-#ifndef _MSC_VER
 const GUID IID_IPersistPropertyBag = {0x37D84F60, 0x42CB, 0x11CE, {0x81, 0x35, 0x00, 0xAA, 0x00, 0x4B, 0xB8, 0x51}};
 const GUID IID_ISpecifyPropertyPages = {0xB196B28B, 0xBAB4, 0x101A, {0xB6, 0x9C, 0x00, 0xAA, 0x00, 0x34, 0x1D, 0x07}};
 const GUID IID_IPersistStream = {0x00000109, 0x0000, 0x0000, {0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46}};
 const GUID IID_IPersist = {0x0000010c, 0x0000, 0x0000, {0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46}};
-#endif
 const GUID IID_IBDA_DeviceControl = {0xFD0A5AF3, 0xB41D, 0x11d2, {0x9C, 0x95, 0x00, 0xC0, 0x4F, 0x79, 0x71, 0xE0}};
 const GUID IID_IKsAggregateControl = {0x7F40EAC0, 0x3947, 0x11D2, {0x87, 0x4E, 0x00, 0xA0, 0xC9, 0x22, 0x31, 0x96}};
 const GUID IID_IKsClockPropertySet = {0x5C5CBD84, 0xE755, 0x11D0, {0xAC, 0x18, 0x00, 0xA0, 0xC9, 0x22, 0x31, 0x96}};