diff --git a/src/mapi/glapi/SConscript b/src/mapi/glapi/SConscript
index 276b2160246..a7764745eda 100644
--- a/src/mapi/glapi/SConscript
+++ b/src/mapi/glapi/SConscript
@@ -52,29 +52,22 @@ if env['platform'] != 'winddk':
     if env['gcc'] and env['platform'] != 'windows':
         if env['machine'] == 'x86':
             env.Append(CPPDEFINES = [
-                'USE_X86_ASM', 
-                'USE_MMX_ASM',
-                'USE_3DNOW_ASM',
-                'USE_SSE_ASM',
+                'USE_X86_ASM',
             ])
             glapi_sources += [
                 'glapi_x86.S',
             ]
         elif env['machine'] == 'x86_64':
             env.Append(CPPDEFINES = [
-                'USE_X86_64_ASM', 
+                'USE_X86_64_ASM',
             ])
             glapi_sources += [
                 'glapi_x86-64.S'
             ]
-        elif env['machine'] == 'ppc':
-            env.Append(CPPDEFINES = [
-                'USE_PPC_ASM', 
-                'USE_VMX_ASM', 
-            ])
-            glapi_sources += [
-            ]
         elif env['machine'] == 'sparc':
+            env.Append(CPPDEFINES = [
+                'USE_SPARC_ASM',
+            ])
             glapi_sources += [
                 'glapi_sparc.S'
             ]