diff --git a/cmdline/dup.c b/cmdline/dup.c
index 2bcfcee6..812f1368 100644
--- a/cmdline/dup.c
+++ b/cmdline/dup.c
@@ -41,18 +41,19 @@ struct snapraid_hash* hash_alloc(struct snapraid_state* state, struct snapraid_d
 	struct snapraid_hash* hash;
 	block_off_t i;
 	unsigned char* buf;
+	size_t hash_size = BLOCK_HASH_SIZE;
 
 	hash = malloc_nofail(sizeof(struct snapraid_hash));
 	hash->disk = disk;
 	hash->file = file;
 
-	buf = malloc_nofail(file->blockmax * BLOCK_HASH_SIZE);
+	buf = malloc_nofail(file->blockmax * hash_size);
 
 	/* set the back pointer */
 	for (i = 0; i < file->blockmax; ++i) {
 		struct snapraid_block* block = fs_file2block_get(file, i);
 
-		memcpy(buf + i * BLOCK_HASH_SIZE, block->hash, BLOCK_HASH_SIZE);
+		memcpy(buf + i * hash_size, block->hash, hash_size);
 
 		if (!block_has_updated_hash(block)) {
 			free(buf);
@@ -61,7 +62,7 @@ struct snapraid_hash* hash_alloc(struct snapraid_state* state, struct snapraid_d
 		}
 	}
 
-	memhash(state->besthash, state->hashseed, hash->hash, buf, file->blockmax * BLOCK_HASH_SIZE);
+	memhash(state->besthash, state->hashseed, hash->hash, buf, file->blockmax * hash_size);
 
 	free(buf);
 
diff --git a/cmdline/io.c b/cmdline/io.c
index 784652b9..d315304c 100644
--- a/cmdline/io.c
+++ b/cmdline/io.c
@@ -872,7 +872,8 @@ void io_init(struct snapraid_io* io, struct snapraid_state* state,
 	struct snapraid_parity_handle* parity_handle_map, unsigned parity_handle_max)
 {
 	unsigned i;
-	size_t allocated;
+	size_t allocated_size;
+	size_t block_size = state->block_size;
 
 	io->state = state;
 
@@ -898,18 +899,18 @@ void io_init(struct snapraid_io* io, struct snapraid_state* state,
 	assert(io->io_max == 1 || (io->io_max >= IO_MIN && io->io_max <= IO_MAX));
 
 	io->buffer_max = buffer_max;
-	allocated = 0;
+	allocated_size = 0;
 	for (i = 0; i < io->io_max; ++i) {
 		if (state->file_mode != ADVISE_DIRECT)
-			io->buffer_map[i] = malloc_nofail_vector_align(handle_max, buffer_max, state->block_size, &io->buffer_alloc_map[i]);
+			io->buffer_map[i] = malloc_nofail_vector_align(handle_max, buffer_max, block_size, &io->buffer_alloc_map[i]);
 		else
-			io->buffer_map[i] = malloc_nofail_vector_direct(handle_max, buffer_max, state->block_size, &io->buffer_alloc_map[i]);
+			io->buffer_map[i] = malloc_nofail_vector_direct(handle_max, buffer_max, block_size, &io->buffer_alloc_map[i]);
 		if (!state->opt.skip_self)
 			mtest_vector(io->buffer_max, state->block_size, io->buffer_map[i]);
-		allocated += state->block_size * buffer_max;
+		allocated_size += block_size * buffer_max;
 	}
 
-	msg_progress("Using %u MiB of memory for %u cached blocks.\n", (unsigned)(allocated / MEBI), io->io_max);
+	msg_progress("Using %u MiB of memory for %u cached blocks.\n", (unsigned)(allocated_size / MEBI), io->io_max);
 
 	if (parity_writer) {
 		io->reader_max = handle_max;