diff --git a/bin/ln/ln.c b/bin/ln/ln.c
index fc3afc133083..e5fdeee072db 100644
--- a/bin/ln/ln.c
+++ b/bin/ln/ln.c
@@ -80,7 +80,7 @@ main(int argc, char *argv[])
 	 * "link", for which the functionality provided is greatly
 	 * simplified.
 	 */
-	if ((p = rindex(argv[0], '/')) == NULL)
+	if ((p = strrchr(argv[0], '/')) == NULL)
 		p = argv[0];
 	else
 		++p;
diff --git a/bin/rm/rm.c b/bin/rm/rm.c
index 653833abab1b..af362a981666 100644
--- a/bin/rm/rm.c
+++ b/bin/rm/rm.c
@@ -90,7 +90,7 @@ main(int argc, char *argv[])
 	 * "unlink", for which the functionality provided is greatly
 	 * simplified.
 	 */
-	if ((p = rindex(argv[0], '/')) == NULL)
+	if ((p = strrchr(argv[0], '/')) == NULL)
 		p = argv[0];
 	else
 		++p;
diff --git a/bin/test/test.c b/bin/test/test.c
index 1259e681c5c5..62c0309698c5 100644
--- a/bin/test/test.c
+++ b/bin/test/test.c
@@ -194,7 +194,7 @@ main(int argc, char **argv)
 	int	res;
 	char	*p;
 
-	if ((p = rindex(argv[0], '/')) == NULL)
+	if ((p = strrchr(argv[0], '/')) == NULL)
 		p = argv[0];
 	else
 		p++;