diff --git a/src/unistd/getcwd.c b/src/unistd/getcwd.c
index a7b925d2..103fbbb5 100644
--- a/src/unistd/getcwd.c
+++ b/src/unistd/getcwd.c
@@ -14,6 +14,12 @@ char *getcwd(char *buf, size_t size)
 		errno = EINVAL;
 		return 0;
 	}
-	if (syscall(SYS_getcwd, buf, size) < 0) return 0;
+	long ret = syscall(SYS_getcwd, buf, size);
+	if (ret < 0)
+		return 0;
+	if (ret == 0 || buf[0] != '/') {
+		errno = ENOENT;
+		return 0;
+	}
 	return buf == tmp ? strdup(buf) : buf;
 }