diff --git a/src/tools/valgrind.supp b/src/tools/valgrind.supp
index 7ea464c8094..0055cf14625 100644
--- a/src/tools/valgrind.supp
+++ b/src/tools/valgrind.supp
@@ -23,6 +23,14 @@
 	fun:pgstat_write_statsfiles
 }
 
+{
+	padding_XLogRecData_CRC_32_bit
+	Memcheck:Value4
+
+	fun:pg_comp_crc32c*
+	fun:XLogRecordAssemble
+}
+
 {
 	padding_XLogRecData_CRC
 	Memcheck:Value8