diff --git a/lib/Headers/cpuid.h b/lib/Headers/cpuid.h
index 5f3b01a9e5a636f9f76c5e54f50f153e3a4c4033..5e93d4c269d67050b21d5d2ac95861087c087849 100644
--- a/lib/Headers/cpuid.h
+++ b/lib/Headers/cpuid.h
@@ -53,7 +53,7 @@
 #define bit_XSAVE       0x04000000
 #define bit_OSXSAVE     0x08000000
 #define bit_AVX         0x10000000
-#define bit_RDRAND      0x40000000
+#define bit_RDRND       0x40000000
 
 /* Features in %edx for level 1 */
 #define bit_FPU         0x00000001