diff --git a/src/libsodium/sodium/utils.c b/src/libsodium/sodium/utils.c
index 607f2529..1ba1d8e5 100644
--- a/src/libsodium/sodium/utils.c
+++ b/src/libsodium/sodium/utils.c
@@ -102,7 +102,7 @@ sodium_bin2hex(char * const hex, const size_t hex_maxlen,
     int          b;
     int          c;
 
-    if (bin_len >= SIZE_MAX / 2 || hex_maxlen < bin_len * 2U) {
+    if (bin_len >= SIZE_MAX / 2 || hex_maxlen <= bin_len * 2U) {
         abort(); /* LCOV_EXCL_LINE */
     }
     while (i < bin_len) {