diff --git a/src/interfaces/ecpg/include/ecpg_config.h.in b/src/interfaces/ecpg/include/ecpg_config.h.in
index 905007cd46..b55169deb5 100644
--- a/src/interfaces/ecpg/include/ecpg_config.h.in
+++ b/src/interfaces/ecpg/include/ecpg_config.h.in
@@ -1,3 +1,9 @@
+/* Define to 1 if `long int' works and is 64 bits. */
+#undef HAVE_LONG_INT_64
+
+/* Define to 1 if `long long int' works and is 64 bits. */
+#undef HAVE_LONG_LONG_INT_64
+
 /* Define to 1 if you want 64-bit integer timestamp and interval support.
    (--enable-integer-datetimes) */
 #undef USE_INTEGER_DATETIMES