diff --git a/sbin/md5/md5.c b/sbin/md5/md5.c
--- a/sbin/md5/md5.c
+++ b/sbin/md5/md5.c
@@ -611,11 +611,16 @@
 			const char *filename = *argv;
 			const char *filemode = "rb";
 
+			if (strcmp(filename, "-") == 0) {
+				f = stdin;
+			} else {
 #ifdef HAVE_CAPSICUM
-			if ((f = fileargs_fopen(fa, filename, filemode)) == NULL) {
+				f = fileargs_fopen(fa, filename, filemode);
 #else
-			if ((f = fopen(filename, filemode)) == NULL) {
+				f = fopen(filename, filemode);
 #endif
+			}
+			if (f == NULL) {
 				if (errno != ENOENT || !(cflag && ignoreMissing)) {
 					warn("%s", filename);
 					failed = true;