diff --git a/src/backend/utils/error/elog.c b/src/backend/utils/error/elog.c
index 2db3e32cb8f..59a61ac832e 100644
--- a/src/backend/utils/error/elog.c
+++ b/src/backend/utils/error/elog.c
@@ -672,6 +672,10 @@ errcode_for_file_access(void)
 			edata->sqlerrcode = ERRCODE_DISK_FULL;
 			break;
 
+		case ENOMEM:			/* Out of memory */
+			edata->sqlerrcode = ERRCODE_OUT_OF_MEMORY;
+			break;
+
 		case ENFILE:			/* File table overflow */
 		case EMFILE:			/* Too many open files */
 			edata->sqlerrcode = ERRCODE_INSUFFICIENT_RESOURCES;