diff --git a/reactos/dll/win32/kernel32/misc/sysinfo.c b/reactos/dll/win32/kernel32/misc/sysinfo.c
index 907e584e365..f1e5429c0d0 100644
--- a/reactos/dll/win32/kernel32/misc/sysinfo.c
+++ b/reactos/dll/win32/kernel32/misc/sysinfo.c
@@ -176,7 +176,7 @@ GetSystemInfo (
 BOOL STDCALL
 IsProcessorFeaturePresent(DWORD ProcessorFeature)
 {
-  if (ProcessorFeature > PROCESSOR_FEATURE_MAX)
+  if (ProcessorFeature >= PROCESSOR_FEATURE_MAX)
     return(FALSE);
 
   return((BOOL)SharedUserData->ProcessorFeatures[ProcessorFeature]);