diff --git a/libexec/rtld-elf/rtld.c b/libexec/rtld-elf/rtld.c
--- a/libexec/rtld-elf/rtld.c
+++ b/libexec/rtld-elf/rtld.c
@@ -6189,7 +6189,10 @@
 			} else if (opt == 'p') {
 				*use_pathp = true;
 			} else if (opt == 'u') {
-				trust = false;
+				u_int ll;
+
+				for (ll = 0; ll < nitems(ld_env_vars); ll++)
+					ld_env_vars[ll].val = NULL;
 			} else if (opt == 'v') {
 				machine[0] = '\0';
 				mib[0] = CTL_HW;