diff --git a/bin/ed/buf.c b/bin/ed/buf.c
index 6d8a6ed4f559..35b5d4d55dc1 100644
--- a/bin/ed/buf.c
+++ b/bin/ed/buf.c
@@ -46,9 +46,9 @@ char *
 get_sbuf_line(line_t *lp)
 {
 	static char *sfbuf = NULL;	/* buffer */
-	static int sfbufsz = 0;		/* buffer size */
+	static size_t sfbufsz;		/* buffer size */
 
-	int len, ct;
+	size_t len;
 
 	if (lp == &buffer_head)
 		return NULL;
@@ -64,7 +64,7 @@ get_sbuf_line(line_t *lp)
 	}
 	len = lp->len;
 	REALLOC(sfbuf, sfbufsz, len + 1, NULL);
-	if ((ct = fread(sfbuf, sizeof(char), len, sfp)) <  0 || ct != len) {
+	if ((fread(sfbuf, sizeof(char), len, sfp)) != len) {
 		fprintf(stderr, "%s\n", strerror(errno));
 		errmsg = "cannot read temp file";
 		return NULL;
@@ -81,7 +81,7 @@ const char *
 put_sbuf_line(const char *cs)
 {
 	line_t *lp;
-	int len, ct;
+	size_t len;
 	const char *s;
 
 	if ((lp = (line_t *) malloc(sizeof(line_t))) == NULL) {
@@ -110,7 +110,7 @@ put_sbuf_line(const char *cs)
 		seek_write = 0;
 	}
 	/* assert: SPL1() */
-	if ((ct = fwrite(cs, sizeof(char), len, sfp)) < 0 || ct != len) {
+	if ((fwrite(cs, sizeof(char), len, sfp)) != len) {
 		sfseek = -1;
 		fprintf(stderr, "%s\n", strerror(errno));
 		errmsg = "cannot write temp file";