diff --git a/src/libsodium/crypto_pwhash/scryptsalsa208sha256/crypto_scrypt-common.c b/src/libsodium/crypto_pwhash/scryptsalsa208sha256/crypto_scrypt-common.c
index 837ce3fc..3e315d9b 100644
--- a/src/libsodium/crypto_pwhash/scryptsalsa208sha256/crypto_scrypt-common.c
+++ b/src/libsodium/crypto_pwhash/scryptsalsa208sha256/crypto_scrypt-common.c
@@ -171,7 +171,7 @@ escrypt_r(escrypt_local_t * local, const uint8_t * passwd, size_t passwdlen,
 
     dst = encode64(dst, buflen - (dst - buf), hash, sizeof(hash));
     sodium_memzero(hash, sizeof hash);
-    if (!dst || dst >= buf + buflen) { /* Can't happen */
+    if (!dst || dst >= buf + buflen) { /* Can't happen LCOV_EXCL_LINE */
         return NULL;
     }
     *dst = 0; /* NUL termination */
@@ -205,15 +205,15 @@ escrypt_gensalt_r(uint32_t N_log2, uint32_t r, uint32_t p,
     *dst++ = itoa64[N_log2];
 
     dst = encode64_uint32(dst, buflen - (dst - buf), r, 30);
-    if (!dst) { /* Can't happen */
+    if (!dst) { /* Can't happen LCOV_EXCL_LINE */
         return NULL;
     }
     dst = encode64_uint32(dst, buflen - (dst - buf), p, 30);
-    if (!dst) { /* Can't happen */
+    if (!dst) { /* Can't happen LCOV_EXCL_LINE */
         return NULL;
     }
     dst = encode64(dst, buflen - (dst - buf), src, srclen);
-    if (!dst || dst >= buf + buflen) { /* Can't happen */
+    if (!dst || dst >= buf + buflen) { /* Can't happen LCOV_EXCL_LINE */
         return NULL;
     }
     *dst = 0; /* NUL termination */
diff --git a/src/libsodium/crypto_pwhash/scryptsalsa208sha256/pwhash_scryptsalsa208sha256.c b/src/libsodium/crypto_pwhash/scryptsalsa208sha256/pwhash_scryptsalsa208sha256.c
index 50b0b0ff..aacc3b3d 100644
--- a/src/libsodium/crypto_pwhash/scryptsalsa208sha256/pwhash_scryptsalsa208sha256.c
+++ b/src/libsodium/crypto_pwhash/scryptsalsa208sha256/pwhash_scryptsalsa208sha256.c
@@ -106,8 +106,8 @@ crypto_pwhash_scryptsalsa208sha256(unsigned char * const out,
 
     memset(out, 0, outlen);
     if (passwdlen > SIZE_MAX || outlen > SIZE_MAX) {
-        errno = EFBIG;
-        return -1;
+        errno = EFBIG; /* LCOV_EXCL_LINE */
+        return -1; /* LCOV_EXCL_LINE */
     }
     if (pickparams(opslimit, memlimit, &N_log2, &p, &r) != 0) {
         errno = EINVAL;
@@ -137,8 +137,8 @@ crypto_pwhash_scryptsalsa208sha256_str(char out[crypto_pwhash_scryptsalsa208sha2
 
     memset(out, 0, crypto_pwhash_scryptsalsa208sha256_STRBYTES);
     if (passwdlen > SIZE_MAX) {
-        errno = EFBIG;
-        return -1;
+        errno = EFBIG; /* LCOV_EXCL_LINE */
+        return -1; /* LCOV_EXCL_LINE */
     }
     if (pickparams(opslimit, memlimit, &N_log2, &p, &r) != 0) {
         errno = EINVAL;
diff --git a/test/default/pwhash.c b/test/default/pwhash.c
index 29357f09..a29cb01e 100644
--- a/test/default/pwhash.c
+++ b/test/default/pwhash.c
@@ -212,5 +212,14 @@ int main(void)
     }
     printf("OK\n");
 
+    assert(crypto_pwhash_scryptsalsa208sha256_saltbytes() > 0U);
+    assert(crypto_pwhash_scryptsalsa208sha256_strbytes() > 1U);
+    assert(crypto_pwhash_scryptsalsa208sha256_strbytes() >
+           strlen(crypto_pwhash_scryptsalsa208sha256_strprefix()));
+    assert(crypto_pwhash_scryptsalsa208sha256_opslimit_interactive() > 0U);
+    assert(crypto_pwhash_scryptsalsa208sha256_memlimit_interactive() > 0U);
+    assert(crypto_pwhash_scryptsalsa208sha256_opslimit_sensitive() > 0U);
+    assert(crypto_pwhash_scryptsalsa208sha256_memlimit_sensitive() > 0U);
+
     return 0;
 }