@@ -22,11 +22,11 @@
 #import "OFSecureData.h"
 
 #import "OFHashAlreadyCalculatedException.h"
 #import "OFOutOfRangeException.h"
 
-#define BLOCK_SIZE 128
+static const size_t blockSize = 128;
 
 @interface OFSHA384Or512Hash ()
 - (void)of_resetState;
 @end
 
@@ -135,11 +135,11 @@
 	OF_UNRECOGNIZED_SELECTOR
 }
 
 + (size_t)blockSize
 {
-	return BLOCK_SIZE;
+	return blockSize;
 }
 
 + (instancetype)hashWithAllowsSwappableMemory: (bool)allowsSwappableMemory
 {
 	return [[[self alloc] initWithAllowsSwappableMemory:
@@ -193,11 +193,11 @@
 	OF_UNRECOGNIZED_SELECTOR
 }
 
 - (size_t)blockSize
 {
-	return BLOCK_SIZE;
+	return blockSize;
 }
 
 - (id)copy
 {
 	OFSHA384Or512Hash *copy = [[[self class] alloc] of_init];