diff --git a/sys/compat/linprocfs/linprocfs.c b/sys/compat/linprocfs/linprocfs.c
index 2549ecc8c254..8129fe8cc2f3 100644
--- a/sys/compat/linprocfs/linprocfs.c
+++ b/sys/compat/linprocfs/linprocfs.c
@@ -954,7 +954,7 @@ linprocfs_doproccmdline(PFS_FILL_ARGS)
 
 	PROC_UNLOCK(p);
 
-	ret = proc_getargv(td, p, sb, ARG_MAX);
+	ret = proc_getargv(td, p, sb);
 	return (ret);
 }
 
@@ -988,7 +988,7 @@ linprocfs_doprocenviron(PFS_FILL_ARGS)
 
 	PROC_UNLOCK(p);
 
-	ret = proc_getenvv(td, p, sb, ARG_MAX);
+	ret = proc_getenvv(td, p, sb);
 	return (ret);
 }
 
diff --git a/sys/fs/procfs/procfs_status.c b/sys/fs/procfs/procfs_status.c
index d981e5ed5054..a97e0a9fa139 100644
--- a/sys/fs/procfs/procfs_status.c
+++ b/sys/fs/procfs/procfs_status.c
@@ -193,5 +193,5 @@ procfs_doproccmdline(PFS_FILL_ARGS)
 
 	PROC_UNLOCK(p);
 
-	return (proc_getargv(td, p, sb, ARG_MAX));
+	return (proc_getargv(td, p, sb));
 }
diff --git a/sys/kern/kern_proc.c b/sys/kern/kern_proc.c
index bd83b59b076b..38bc438a3d81 100644
--- a/sys/kern/kern_proc.c
+++ b/sys/kern/kern_proc.c
@@ -1631,20 +1631,19 @@ get_proc_vector(struct thread *td, struct proc *p, char ***proc_vectorp,
 
 static int
 get_ps_strings(struct thread *td, struct proc *p, struct sbuf *sb,
-    enum proc_vector_type type, size_t nchr)
+    enum proc_vector_type type)
 {
-	size_t done, len, vsize;
+	size_t done, len, nchr, vsize;
 	int error, i;
 	char **proc_vector, *sptr;
 	char pss_string[GET_PS_STRINGS_CHUNK_SZ];
 
 	PROC_ASSERT_HELD(p);
 
-	 /*
-	  * We are not going to read more than 2 * (PATH_MAX + ARG_MAX) bytes.
-	  */
-	if (nchr > 2 * (PATH_MAX + ARG_MAX))
-		nchr = 2 * (PATH_MAX + ARG_MAX);
+	/*
+	 * We are not going to read more than 2 * (PATH_MAX + ARG_MAX) bytes.
+	 */
+	nchr = 2 * (PATH_MAX + ARG_MAX);
 
 	error = get_proc_vector(td, p, &proc_vector, &vsize, type);
 	if (error != 0)
@@ -1679,17 +1678,17 @@ get_ps_strings(struct thread *td, struct proc *p, struct sbuf *sb,
 }
 
 int
-proc_getargv(struct thread *td, struct proc *p, struct sbuf *sb, size_t nchr)
+proc_getargv(struct thread *td, struct proc *p, struct sbuf *sb)
 {
 
-	return (get_ps_strings(curthread, p, sb, PROC_ARG, nchr));
+	return (get_ps_strings(curthread, p, sb, PROC_ARG));
 }
 
 int
-proc_getenvv(struct thread *td, struct proc *p, struct sbuf *sb, size_t nchr)
+proc_getenvv(struct thread *td, struct proc *p, struct sbuf *sb)
 {
 
-	return (get_ps_strings(curthread, p, sb, PROC_ENV, nchr));
+	return (get_ps_strings(curthread, p, sb, PROC_ENV));
 }
 
 /*
@@ -1728,7 +1727,7 @@ sysctl_kern_proc_args(SYSCTL_HANDLER_ARGS)
 		_PHOLD(p);
 		PROC_UNLOCK(p);
 		sbuf_new_for_sysctl(&sb, NULL, GET_PS_STRINGS_CHUNK_SZ, req);
-		error = proc_getargv(curthread, p, &sb, req->oldlen);
+		error = proc_getargv(curthread, p, &sb);
 		error2 = sbuf_finish(&sb);
 		PRELE(p);
 		sbuf_delete(&sb);
@@ -1780,7 +1779,7 @@ sysctl_kern_proc_env(SYSCTL_HANDLER_ARGS)
 	}
 
 	sbuf_new_for_sysctl(&sb, NULL, GET_PS_STRINGS_CHUNK_SZ, req);
-	error = proc_getenvv(curthread, p, &sb, req->oldlen);
+	error = proc_getenvv(curthread, p, &sb);
 	error2 = sbuf_finish(&sb);
 	PRELE(p);
 	sbuf_delete(&sb);
diff --git a/sys/sys/proc.h b/sys/sys/proc.h
index a0d942c74232..ba00a8861e25 100644
--- a/sys/sys/proc.h
+++ b/sys/sys/proc.h
@@ -859,10 +859,8 @@ int	p_canwait(struct thread *td, struct proc *p);
 struct	pargs *pargs_alloc(int len);
 void	pargs_drop(struct pargs *pa);
 void	pargs_hold(struct pargs *pa);
-int	proc_getargv(struct thread *td, struct proc *p, struct sbuf *sb,
-	    size_t nchr);
-int	proc_getenvv(struct thread *td, struct proc *p, struct sbuf *sb,
-	    size_t nchr);
+int	proc_getargv(struct thread *td, struct proc *p, struct sbuf *sb);
+int	proc_getenvv(struct thread *td, struct proc *p, struct sbuf *sb);
 void	procinit(void);
 void	proc_linkup0(struct proc *p, struct thread *td);
 void	proc_linkup(struct proc *p, struct thread *td);