diff --git a/src/libsodium/crypto_pwhash/argon2/argon2-core.c b/src/libsodium/crypto_pwhash/argon2/argon2-core.c
index 4ba2ec53..7767827d 100644
--- a/src/libsodium/crypto_pwhash/argon2/argon2-core.c
+++ b/src/libsodium/crypto_pwhash/argon2/argon2-core.c
@@ -118,7 +118,7 @@ static int allocate_memory(block_region **region, uint32_t m_cost) {
         memcpy(&memory, &aligned, sizeof memory);
     }
 #endif
-    if (!memory) {
+    if (base == NULL) {
         return ARGON2_MEMORY_ALLOCATION_ERROR;
     }
     (*region)->base = base;