diff --git a/src/wp-includes/option.php b/src/wp-includes/option.php
index f90e82017e..d0eb6f9c83 100644
--- a/src/wp-includes/option.php
+++ b/src/wp-includes/option.php
@@ -784,7 +784,7 @@ function delete_transient( $transient ) {
 	 */
 	do_action( "delete_transient_{$transient}", $transient );
 
-	if ( wp_using_ext_object_cache() ) {
+	if ( wp_using_ext_object_cache() || wp_installing() ) {
 		$result = wp_cache_delete( $transient, 'transient' );
 	} else {
 		$option_timeout = '_transient_timeout_' . $transient;
@@ -846,7 +846,7 @@ function get_transient( $transient ) {
 		return $pre;
 	}
 
-	if ( wp_using_ext_object_cache() ) {
+	if ( wp_using_ext_object_cache() || wp_installing() ) {
 		$value = wp_cache_get( $transient, 'transient' );
 	} else {
 		$transient_option = '_transient_' . $transient;
@@ -930,7 +930,7 @@ function set_transient( $transient, $value, $expiration = 0 ) {
 	 */
 	$expiration = apply_filters( "expiration_of_transient_{$transient}", $expiration, $value, $transient );
 
-	if ( wp_using_ext_object_cache() ) {
+	if ( wp_using_ext_object_cache() || wp_installing() ) {
 		$result = wp_cache_set( $transient, $value, 'transient', $expiration );
 	} else {
 		$transient_timeout = '_transient_timeout_' . $transient;
@@ -1858,7 +1858,7 @@ function delete_site_transient( $transient ) {
 	 */
 	do_action( "delete_site_transient_{$transient}", $transient );
 
-	if ( wp_using_ext_object_cache() ) {
+	if ( wp_using_ext_object_cache() || wp_installing() ) {
 		$result = wp_cache_delete( $transient, 'site-transient' );
 	} else {
 		$option_timeout = '_site_transient_timeout_' . $transient;
@@ -1922,7 +1922,7 @@ function get_site_transient( $transient ) {
 		return $pre;
 	}
 
-	if ( wp_using_ext_object_cache() ) {
+	if ( wp_using_ext_object_cache() || wp_installing() ) {
 		$value = wp_cache_get( $transient, 'site-transient' );
 	} else {
 		// Core transients that do not have a timeout. Listed here so querying timeouts can be avoided.
@@ -2003,7 +2003,7 @@ function set_site_transient( $transient, $value, $expiration = 0 ) {
 	 */
 	$expiration = apply_filters( "expiration_of_site_transient_{$transient}", $expiration, $value, $transient );
 
-	if ( wp_using_ext_object_cache() ) {
+	if ( wp_using_ext_object_cache() || wp_installing() ) {
 		$result = wp_cache_set( $transient, $value, 'site-transient', $expiration );
 	} else {
 		$transient_timeout = '_site_transient_timeout_' . $transient;