diff --git a/src/libsodium/include/sodium/crypto_generichash_blake2b.h b/src/libsodium/include/sodium/crypto_generichash_blake2b.h
index 5c7f9417..0a560c2f 100644
--- a/src/libsodium/include/sodium/crypto_generichash_blake2b.h
+++ b/src/libsodium/include/sodium/crypto_generichash_blake2b.h
@@ -23,7 +23,7 @@ extern "C" {
 #endif
 
 #pragma pack(push, 1)
-CRYPTO_ALIGN(64) typedef struct {
+CRYPTO_ALIGN(64) typedef struct crypto_generichash_blake2b_state {
     uint64_t h[8];
     uint64_t t[2];
     uint64_t f[2];