diff --git a/intl/msg_hash_es.c b/intl/msg_hash_es.c
index 9f1a7f5282..692d3eb165 100644
--- a/intl/msg_hash_es.c
+++ b/intl/msg_hash_es.c
@@ -15,6 +15,10 @@
 
 #include "../msg_hash.h"
 
+#ifdef __clang__
+#pragma clang diagnostic ignored "-Winvalid-source-encoding"
+#endif
+
  /* IMPORTANT:
   * For non-english characters to work without proper unicode support,
   * we need this file to be encoded in ISO 8859-1 (Latin1), not UTF-8.