diff --git a/inc/EightBitCompilerDefinitions.h b/inc/EightBitCompilerDefinitions.h
index 965743f..a6b36a2 100644
--- a/inc/EightBitCompilerDefinitions.h
+++ b/inc/EightBitCompilerDefinitions.h
@@ -43,7 +43,7 @@ inline bool EightBit::oddParity(uint8_t value) {
 #	define LIKELY(x)	__builtin_expect(!!(x), 1)
 #	define UNLIKELY(x)	__builtin_expect(!!(x), 0)
 
-#	define EIGHTBIT_PARITY(x)	__builtin_parity(value)
+#	define EIGHTBIT_PARITY(x)	__builtin_parity(x)
 
 #	define UNREACHABLE __builtin_unreachable();