diff --git a/dlls/kernel32/cpu.c b/dlls/kernel32/cpu.c
index 1e99951993e..89482a65e11 100644
--- a/dlls/kernel32/cpu.c
+++ b/dlls/kernel32/cpu.c
@@ -328,6 +328,21 @@ DWORD WINAPI GetActiveProcessorCount(WORD group)
     return cpus;
 }
 
+/***********************************************************************
+ *           GetMaximumProcessorCount (KERNEL32.@)
+ */
+DWORD WINAPI GetMaximumProcessorCount(WORD group)
+{
+    SYSTEM_INFO si;
+    DWORD cpus;
+
+    GetSystemInfo( &si );
+    cpus = si.dwNumberOfProcessors;
+
+    FIXME("semi-stub, returning %u\n", cpus);
+    return cpus;
+}
+
 /***********************************************************************
  *           GetEnabledXStateFeatures (KERNEL32.@)
  */
diff --git a/dlls/kernel32/kernel32.spec b/dlls/kernel32/kernel32.spec
index f600c7e8143..5490b07d8e6 100644
--- a/dlls/kernel32/kernel32.spec
+++ b/dlls/kernel32/kernel32.spec
@@ -715,7 +715,7 @@
 # @ stub GetLongPathNameTransactedW
 @ stdcall GetLongPathNameW (wstr long long)
 @ stdcall GetMailslotInfo(long ptr ptr ptr ptr)
-# @ stub GetMaximumProcessorCount
+@ stdcall GetMaximumProcessorCount(long)
 # @ stub GetMaximumProcessorGroupCount
 @ stdcall GetModuleFileNameA(long ptr long)
 @ stdcall GetModuleFileNameW(long ptr long)