diff --git a/ketopt.h b/ketopt.h
index 11638db..70193a5 100644
--- a/ketopt.h
+++ b/ketopt.h
@@ -92,7 +92,7 @@ static int ketopt(ketopt_t *s, int argc, char *argv[], int permute, const char *
 		char *p;
 		if (s->pos == 0) s->pos = 1;
 		opt = s->opt = argv[s->i][s->pos++];
-		p = strchr(ostr, opt);
+		p = strchr((char*)ostr, opt);
 		if (p == 0) {
 			opt = '?'; /* unknown option */
 		} else if (p[1] == ':') {
diff --git a/main.c b/main.c
index 504c252..7a42685 100644
--- a/main.c
+++ b/main.c
@@ -6,7 +6,7 @@
 #include "mmpriv.h"
 #include "ketopt.h"
 
-#define MM_VERSION "2.14-r883"
+#define MM_VERSION "2.14-r884"
 
 #ifdef __linux__
 #include <sys/resource.h>