1 files changed, 1 insertions, 1 deletions
diff --git a/cpu.cpp b/cpu.cpp
index 643a0ff..a492250 100755
--- a/cpu.cpp
+++ b/cpu.cpp
@@ -76,7 +76,7 @@ static void SigIllHandlerSSE2(int)
 }
 #endif
 
-#elif _MSC_VER >= 1400
+#elif _MSC_VER >= 1400 && CRYPTOPP_BOOL_X64
 
 bool CpuId(word32 input, word32 *output)
 {