diff --git a/libnm-core/nm-utils.c b/libnm-core/nm-utils.c
index e14775ff2..b3198f4c0 100644
--- a/libnm-core/nm-utils.c
+++ b/libnm-core/nm-utils.c
@@ -2218,7 +2218,7 @@ nm_utils_file_is_pkcs12 (const char *filename)
  *   for additional checks. This check is performed after the check for
  *   @file_test_flags. You cannot omit both @file_test_flags and @predicate.
  * @user_data: (closure): (allow-none): user data for @predicate function.
- * @error: on failure, a "not found" error using @error_domain and @error_code
+ * @error: (allow-none): on failure, set a "not found" error %G_IO_ERROR %G_IO_ERROR_NOT_FOUND.
  *
  * Searches for a @progname file in a list of search @paths.
  *
diff --git a/libnm-util/nm-utils.c b/libnm-util/nm-utils.c
index 203803f23..022fa70f0 100644
--- a/libnm-util/nm-utils.c
+++ b/libnm-util/nm-utils.c
@@ -1756,7 +1756,7 @@ nm_utils_file_is_pkcs12 (const char *filename)
  *   for additional checks. This check is performed after the check for
  *   @file_test_flags. You cannot omit both @file_test_flags and @predicate.
  * @user_data: (closure): (allow-none): user data for @predicate function.
- * @error: on failure, a "not found" error using @error_domain and @error_code
+ * @error: (allow-none): on failure, set a "not found" error %G_IO_ERROR %G_IO_ERROR_NOT_FOUND.
  *
  * Searches for a @progname file in a list of search @paths.
  *