diff --git a/src/libsodium/include/sodium/crypto_auth.h b/src/libsodium/include/sodium/crypto_auth.h
index 8fc6bf0e..30094eec 100644
--- a/src/libsodium/include/sodium/crypto_auth.h
+++ b/src/libsodium/include/sodium/crypto_auth.h
@@ -23,8 +23,7 @@ size_t  crypto_auth_keybytes(void);
 
 #define crypto_auth_PRIMITIVE "hmacsha512256"
 SODIUM_EXPORT
-const char *crypto_auth_primitive(void)
-            __attribute__ ((warn_unused_result));
+const char *crypto_auth_primitive(void);
 
 SODIUM_EXPORT
 int crypto_auth(unsigned char *out, const unsigned char *in,
diff --git a/src/libsodium/include/sodium/crypto_generichash.h b/src/libsodium/include/sodium/crypto_generichash.h
index c061da12..60d46524 100644
--- a/src/libsodium/include/sodium/crypto_generichash.h
+++ b/src/libsodium/include/sodium/crypto_generichash.h
@@ -39,8 +39,7 @@ size_t  crypto_generichash_keybytes(void);
 
 #define crypto_generichash_PRIMITIVE "blake2b"
 SODIUM_EXPORT
-const char *crypto_generichash_primitive(void)
-            __attribute__ ((warn_unused_result));
+const char *crypto_generichash_primitive(void);
 
 typedef crypto_generichash_blake2b_state crypto_generichash_state;
 SODIUM_EXPORT
diff --git a/src/libsodium/include/sodium/crypto_sign.h b/src/libsodium/include/sodium/crypto_sign.h
index 54a8bb3d..ad390a76 100644
--- a/src/libsodium/include/sodium/crypto_sign.h
+++ b/src/libsodium/include/sodium/crypto_sign.h
@@ -38,8 +38,7 @@ size_t  crypto_sign_secretkeybytes(void);
 
 #define crypto_sign_PRIMITIVE "ed25519"
 SODIUM_EXPORT
-const char *crypto_sign_primitive(void)
-            __attribute__ ((warn_unused_result));
+const char *crypto_sign_primitive(void);
 
 SODIUM_EXPORT
 int crypto_sign_seed_keypair(unsigned char *pk, unsigned char *sk,
diff --git a/src/libsodium/include/sodium/crypto_stream.h b/src/libsodium/include/sodium/crypto_stream.h
index c4ec4b78..b0c6c41a 100644
--- a/src/libsodium/include/sodium/crypto_stream.h
+++ b/src/libsodium/include/sodium/crypto_stream.h
@@ -31,8 +31,7 @@ size_t  crypto_stream_noncebytes(void);
 
 #define crypto_stream_PRIMITIVE "xsalsa20"
 SODIUM_EXPORT
-const char *crypto_stream_primitive(void)
-            __attribute__ ((warn_unused_result));
+const char *crypto_stream_primitive(void);
 
 SODIUM_EXPORT
 int crypto_stream(unsigned char *c, unsigned long long clen,
diff --git a/src/libsodium/include/sodium/randombytes.h b/src/libsodium/include/sodium/randombytes.h
index ea0aef0b..08aff052 100644
--- a/src/libsodium/include/sodium/randombytes.h
+++ b/src/libsodium/include/sodium/randombytes.h
@@ -44,8 +44,7 @@ SODIUM_EXPORT
 int randombytes_set_implementation(randombytes_implementation *impl);
 
 SODIUM_EXPORT
-const char *randombytes_implementation_name(void)
-            __attribute__ ((warn_unused_result));
+const char *randombytes_implementation_name(void);
 
 /* -- NaCl compatibility interface -- */
 
diff --git a/src/libsodium/include/sodium/randombytes_nativeclient.h b/src/libsodium/include/sodium/randombytes_nativeclient.h
index 03015136..07666cb6 100644
--- a/src/libsodium/include/sodium/randombytes_nativeclient.h
+++ b/src/libsodium/include/sodium/randombytes_nativeclient.h
@@ -17,8 +17,7 @@ SODIUM_EXPORT
 extern struct randombytes_implementation randombytes_nativeclient_implementation;
 
 SODIUM_EXPORT
-const char *randombytes_nativeclient_implementation_name(void)
-            __attribute__ ((warn_unused_result));
+const char *randombytes_nativeclient_implementation_name(void);
 
 SODIUM_EXPORT
 uint32_t    randombytes_nativeclient(void);
diff --git a/src/libsodium/include/sodium/randombytes_salsa20_random.h b/src/libsodium/include/sodium/randombytes_salsa20_random.h
index 6bf691e9..e6d291c5 100644
--- a/src/libsodium/include/sodium/randombytes_salsa20_random.h
+++ b/src/libsodium/include/sodium/randombytes_salsa20_random.h
@@ -22,8 +22,7 @@ SODIUM_EXPORT
 extern struct randombytes_implementation randombytes_salsa20_implementation;
 
 SODIUM_EXPORT
-const char *randombytes_salsa20_implementation_name(void)
-            __attribute__ ((warn_unused_result));
+const char *randombytes_salsa20_implementation_name(void);
 
 SODIUM_EXPORT
 uint32_t    randombytes_salsa20_random(void);
diff --git a/src/libsodium/include/sodium/randombytes_sysrandom.h b/src/libsodium/include/sodium/randombytes_sysrandom.h
index d91da8c9..20dab781 100644
--- a/src/libsodium/include/sodium/randombytes_sysrandom.h
+++ b/src/libsodium/include/sodium/randombytes_sysrandom.h
@@ -21,8 +21,7 @@ SODIUM_EXPORT
 extern struct randombytes_implementation randombytes_sysrandom_implementation;
 
 SODIUM_EXPORT
-const char *randombytes_sysrandom_implementation_name(void)
-            __attribute__ ((warn_unused_result));
+const char *randombytes_sysrandom_implementation_name(void);
 
 SODIUM_EXPORT
 uint32_t    randombytes_sysrandom(void);