diff --git a/mz_zip_rw.c b/mz_zip_rw.c
index d81a275..b4000ec 100644
--- a/mz_zip_rw.c
+++ b/mz_zip_rw.c
@@ -810,7 +810,7 @@ int32_t mz_zip_reader_entry_save_buffer(void *handle, void *buf, int32_t len) {
 
     mz_stream_mem_set_buffer(mem_stream, buf, len);
 
-    err = mz_stream_mem_open(mem_stream, NULL, MZ_OPEN_MODE_READ);
+    err = mz_stream_mem_open(mem_stream, NULL, MZ_OPEN_MODE_WRITE);
     if (err == MZ_OK)
         err = mz_zip_reader_entry_save(reader, mem_stream, mz_stream_mem_write);
 
diff --git a/mz_zip_rw.h b/mz_zip_rw.h
index baa8f60..0855729 100644
--- a/mz_zip_rw.h
+++ b/mz_zip_rw.h
@@ -66,7 +66,7 @@ int32_t mz_zip_reader_entry_close(void *handle);
 /* Closes an entry */
 
 int32_t mz_zip_reader_entry_read(void *handle, void *buf, int32_t len);
-/* Reads and entry after being opened */
+/* Reads an entry after being opened */
 
 int32_t mz_zip_reader_entry_get_hash(void *handle, uint16_t algorithm, uint8_t *digest, int32_t digest_size);
 /* Gets a hash algorithm from the entry's extra field */