diff --git a/kernel-src/sys/cred.c b/kernel-src/sys/cred.c
index 9ad031d1..18c9cc90 100644
--- a/kernel-src/sys/cred.c
+++ b/kernel-src/sys/cred.c
@@ -4,9 +4,6 @@
 #include <kernel/auth.h>
 
 int cred_setuids(cred_t *cred, int uid, int euid, int suid) {
-	if (uid < -1 || euid < -1 || suid < -1 || (uid == -1 && euid == -1 && suid == -1))
-		return EINVAL;
-
 	int error = auth_cred_check(cred, AUTH_ACTIONS_CRED_SETRESUID, uid, euid, suid);
 	if (error)
 		return error;
@@ -19,9 +16,6 @@ int cred_setuids(cred_t *cred, int uid, int euid, int suid) {
 }
 
 int cred_setgids(cred_t *cred, int gid, int egid, int sgid) {
-	if (gid < -1 || egid < -1 || sgid < -1 || (gid == -1 && egid == -1 && sgid == -1))
-		return EINVAL;
-
 	int error = auth_cred_check(cred, AUTH_ACTIONS_CRED_SETRESGID, gid, egid, sgid);
 	if (error)
 		return error;
diff --git a/kernel-src/sys/defaultauth.c b/kernel-src/sys/defaultauth.c
index a737e426..6d0c5ddd 100644
--- a/kernel-src/sys/defaultauth.c
+++ b/kernel-src/sys/defaultauth.c
@@ -171,7 +171,7 @@ static int credlistener(cred_t *cred, int actions, void *arg0, void *arg1, void
 		} else {
 			if (*id != -1 && *id != cred->uid && *id != cred->euid && *id != cred->suid)
 				return AUTH_DECISION_DENY;
-			if (*eid != -1 && *id != cred->uid && *id != cred->euid && *id != cred->suid)
+			if (*eid != -1 && *eid != cred->uid && *eid != cred->euid && *eid != cred->suid)
 				return AUTH_DECISION_DENY;
 			if (*sid != -1 && *sid != cred->uid && *sid != cred->euid && *sid != cred->suid)
 				return AUTH_DECISION_DENY;
@@ -188,7 +188,7 @@ static int credlistener(cred_t *cred, int actions, void *arg0, void *arg1, void
 		} else {
 			if (*id != -1 && *id != cred->gid && *id != cred->egid && *id != cred->sgid)
 				return AUTH_DECISION_DENY;
-			if (*eid != -1 && *id != cred->gid && *id != cred->egid && *id != cred->sgid)
+			if (*eid != -1 && *eid != cred->gid && *eid != cred->egid && *eid != cred->sgid)
 				return AUTH_DECISION_DENY;
 			if (*sid != -1 && *sid != cred->gid && *sid != cred->egid && *sid != cred->sgid)
 				return AUTH_DECISION_DENY;