diff --git a/src/nxt_string.h b/src/nxt_string.h
index 18ea5490d..a5bb1f79c 100644
--- a/src/nxt_string.h
+++ b/src/nxt_string.h
@@ -58,7 +58,7 @@ NXT_EXPORT void nxt_memcpy_upcase(u_char *dst, const u_char *src,
 nxt_inline void *
 nxt_cpymem(void *dst, const void *src, size_t length)
 {
-    return ((u_char *) memcpy(dst, src, length)) + length;
+    return memcpy(dst, src, length) + length;
 }