diff --git a/dlls/kernel32/cpu.c b/dlls/kernel32/cpu.c
index 996d776e3e5..08603624fdf 100644
--- a/dlls/kernel32/cpu.c
+++ b/dlls/kernel32/cpu.c
@@ -212,7 +212,7 @@ VOID WINAPI GetNativeSystemInfo(
 BOOL WINAPI IsProcessorFeaturePresent (
 	DWORD feature	/* [in] Feature number, (PF_ constants from "winnt.h") */) 
 {
-  if (feature < 64)
+  if (feature < PROCESSOR_FEATURE_MAX)
     return SHARED_DATA->ProcessorFeatures[feature];
   else
     return FALSE;