diff --git a/src/librc/librc-daemon.c b/src/librc/librc-daemon.c
index 2b0d9712..5a76c880 100644
--- a/src/librc/librc-daemon.c
+++ b/src/librc/librc-daemon.c
@@ -147,7 +147,7 @@ rc_find_pids(const char *exec, const char *const *argv, uid_t uid, pid_t pid)
 	memset(my_ns, 0, sizeof(my_ns));
 	memset(proc_ns, 0, sizeof(proc_ns));
 	if (exists("/proc/self/ns/pid")) {
-		rc = readlink("/proc/self/ns/pid", my_ns, sizeof(my_ns));
+		rc = readlink("/proc/self/ns/pid", my_ns, sizeof(my_ns)-1);
 		if (rc <= 0)
 			my_ns[0] = '\0';
 	}
@@ -161,7 +161,7 @@ rc_find_pids(const char *exec, const char *const *argv, uid_t uid, pid_t pid)
 			continue;
 		xasprintf(&buffer, "/proc/%d/ns/pid", p);
 		if (exists(buffer)) {
-			rc = readlink(buffer, proc_ns, sizeof(proc_ns));
+			rc = readlink(buffer, proc_ns, sizeof(proc_ns)-1);
 			if (rc <= 0)
 				proc_ns[0] = '\0';
 		}
diff --git a/src/librc/librc.c b/src/librc/librc.c
index c38695cc..1bdd9307 100644
--- a/src/librc/librc.c
+++ b/src/librc/librc.c
@@ -558,7 +558,7 @@ rc_service_resolve(const char *service)
 
 	if (*file) {
 		memset(buffer, 0, sizeof(buffer));
-		r = readlink(file, buffer, sizeof(buffer));
+		r = readlink(file, buffer, sizeof(buffer)-1);
 		if (r > 0)
 			return xstrdup(buffer);
 	}
diff --git a/src/rc/openrc-run.c b/src/rc/openrc-run.c
index 229f5ed3..7649b04c 100644
--- a/src/rc/openrc-run.c
+++ b/src/rc/openrc-run.c
@@ -1152,7 +1152,7 @@ int main(int argc, char **argv)
 	}
 	lnk = xmalloc(4096);
 	memset(lnk, 0, 4096);
-	if (readlink(argv[1], lnk, 4096)) {
+	if (readlink(argv[1], lnk, 4096-1)) {
 		dir = dirname(path);
 		if (strchr(lnk, '/')) {
 			save = xstrdup(dir);