diff --git a/coreutils/tr.c b/coreutils/tr.c
index ddb73873d..32a4f2917 100644
--- a/coreutils/tr.c
+++ b/coreutils/tr.c
@@ -142,7 +142,7 @@ extern int tr_main(int argc, char **argv)
 {
 	register unsigned char *ptr;
 	int output_length=0, input_length;
-	int index = 1;
+	int idx = 1;
 	int i;
 	RESERVE_BB_BUFFER(output, BUFSIZ);
 	RESERVE_BB_BUFFER(input,  BUFSIZ);
@@ -157,8 +157,8 @@ extern int tr_main(int argc, char **argv)
 	pinvec  = invec;
 	poutvec = outvec;
 
-	if (argc > 1 && argv[index][0] == '-') {
-		for (ptr = (unsigned char *) &argv[index][1]; *ptr; ptr++) {
+	if (argc > 1 && argv[idx][0] == '-') {
+		for (ptr = (unsigned char *) &argv[idx][1]; *ptr; ptr++) {
 			switch (*ptr) {
 			case 'c':
 				com_fl = TRUE;
@@ -173,21 +173,21 @@ extern int tr_main(int argc, char **argv)
 				show_usage();
 			}
 		}
-		index++;
+		idx++;
 	}
 	for (i = 0; i <= ASCII; i++) {
 		vector[i] = i;
 		invec[i] = outvec[i] = FALSE;
 	}
 
-	if (argv[index] != NULL) {
-		input_length = expand(argv[index++], input);
+	if (argv[idx] != NULL) {
+		input_length = expand(argv[idx++], input);
 		if (com_fl)
 			input_length = complement(input, input_length);
-		if (argv[index] != NULL) {
-			if (*argv[index] == '\0')
+		if (argv[idx] != NULL) {
+			if (*argv[idx] == '\0')
 				error_msg_and_die("STRING2 cannot be empty");
-			output_length = expand(argv[index], output);
+			output_length = expand(argv[idx], output);
 			map(input, input_length, output, output_length);
 		}
 		for (i = 0; i < input_length; i++)
diff --git a/sysklogd/syslogd.c b/sysklogd/syslogd.c
index 52642e302..e5ddd3b82 100644
--- a/sysklogd/syslogd.c
+++ b/sysklogd/syslogd.c
@@ -55,7 +55,7 @@
 #define __LOG_FILE "/var/log/messages"
 
 /* Path to the unix socket */
-char lfile[BUFSIZ] = "";
+static char lfile[BUFSIZ] = "";
 
 static char *logFilePath = __LOG_FILE;
 
@@ -390,18 +390,18 @@ static void domark(int sig)
 static const int BUFSIZE = 1023;
 static int serveConnection (int conn)
 {
-	RESERVE_BB_BUFFER(buf, BUFSIZE + 1);
+	RESERVE_BB_BUFFER(tmpbuf, BUFSIZE + 1);
 	int    n_read;
 
-	while ((n_read = read (conn, buf, BUFSIZE )) > 0) {
+	while ((n_read = read (conn, tmpbuf, BUFSIZE )) > 0) {
 
 		int           pri = (LOG_USER | LOG_NOTICE);
 		char          line[ BUFSIZE + 1 ];
 		unsigned char c;
 
-		char *p = buf, *q = line;
+		char *p = tmpbuf, *q = line;
 
-		buf[ n_read - 1 ] = '\0';
+		tmpbuf[ n_read - 1 ] = '\0';
 
 		while (p && (c = *p) && q < &line[ sizeof (line) - 1 ]) {
 			if (c == '<') {
diff --git a/syslogd.c b/syslogd.c
index 52642e302..e5ddd3b82 100644
--- a/syslogd.c
+++ b/syslogd.c
@@ -55,7 +55,7 @@
 #define __LOG_FILE "/var/log/messages"
 
 /* Path to the unix socket */
-char lfile[BUFSIZ] = "";
+static char lfile[BUFSIZ] = "";
 
 static char *logFilePath = __LOG_FILE;
 
@@ -390,18 +390,18 @@ static void domark(int sig)
 static const int BUFSIZE = 1023;
 static int serveConnection (int conn)
 {
-	RESERVE_BB_BUFFER(buf, BUFSIZE + 1);
+	RESERVE_BB_BUFFER(tmpbuf, BUFSIZE + 1);
 	int    n_read;
 
-	while ((n_read = read (conn, buf, BUFSIZE )) > 0) {
+	while ((n_read = read (conn, tmpbuf, BUFSIZE )) > 0) {
 
 		int           pri = (LOG_USER | LOG_NOTICE);
 		char          line[ BUFSIZE + 1 ];
 		unsigned char c;
 
-		char *p = buf, *q = line;
+		char *p = tmpbuf, *q = line;
 
-		buf[ n_read - 1 ] = '\0';
+		tmpbuf[ n_read - 1 ] = '\0';
 
 		while (p && (c = *p) && q < &line[ sizeof (line) - 1 ]) {
 			if (c == '<') {
diff --git a/tr.c b/tr.c
index ddb73873d..32a4f2917 100644
--- a/tr.c
+++ b/tr.c
@@ -142,7 +142,7 @@ extern int tr_main(int argc, char **argv)
 {
 	register unsigned char *ptr;
 	int output_length=0, input_length;
-	int index = 1;
+	int idx = 1;
 	int i;
 	RESERVE_BB_BUFFER(output, BUFSIZ);
 	RESERVE_BB_BUFFER(input,  BUFSIZ);
@@ -157,8 +157,8 @@ extern int tr_main(int argc, char **argv)
 	pinvec  = invec;
 	poutvec = outvec;
 
-	if (argc > 1 && argv[index][0] == '-') {
-		for (ptr = (unsigned char *) &argv[index][1]; *ptr; ptr++) {
+	if (argc > 1 && argv[idx][0] == '-') {
+		for (ptr = (unsigned char *) &argv[idx][1]; *ptr; ptr++) {
 			switch (*ptr) {
 			case 'c':
 				com_fl = TRUE;
@@ -173,21 +173,21 @@ extern int tr_main(int argc, char **argv)
 				show_usage();
 			}
 		}
-		index++;
+		idx++;
 	}
 	for (i = 0; i <= ASCII; i++) {
 		vector[i] = i;
 		invec[i] = outvec[i] = FALSE;
 	}
 
-	if (argv[index] != NULL) {
-		input_length = expand(argv[index++], input);
+	if (argv[idx] != NULL) {
+		input_length = expand(argv[idx++], input);
 		if (com_fl)
 			input_length = complement(input, input_length);
-		if (argv[index] != NULL) {
-			if (*argv[index] == '\0')
+		if (argv[idx] != NULL) {
+			if (*argv[idx] == '\0')
 				error_msg_and_die("STRING2 cannot be empty");
-			output_length = expand(argv[index], output);
+			output_length = expand(argv[idx], output);
 			map(input, input_length, output, output_length);
 		}
 		for (i = 0; i < input_length; i++)