diff --git a/src/wp-admin/includes/ms.php b/src/wp-admin/includes/ms.php
index ad9dbec3b2..e46df4caf9 100644
--- a/src/wp-admin/includes/ms.php
+++ b/src/wp-admin/includes/ms.php
@@ -1016,7 +1016,7 @@ jQuery( function($) {
 		// Don't show a spinner for English and installed languages,
 		// as there is nothing to download.
 		if ( ! languageSelect.find( 'option:selected' ).data( 'installed' ) ) {
-			$( '#submit', this ).after( '<span class="spinner language-install-spinner is-active" />' );
+			$( '#submit', this ).attr( 'disabled', true ).after( '<span class="spinner language-install-spinner is-active" />' );
 		}
 	});
 } );
diff --git a/src/wp-admin/includes/options.php b/src/wp-admin/includes/options.php
index 68e9138a2f..68b8e5f81e 100644
--- a/src/wp-admin/includes/options.php
+++ b/src/wp-admin/includes/options.php
@@ -93,7 +93,7 @@ function options_general_add_js() {
 			// Don't show a spinner for English and installed languages,
 			// as there is nothing to download.
 			if ( ! languageSelect.find( 'option:selected' ).data( 'installed' ) ) {
-				$( '#submit', this ).after( '<span class="spinner language-install-spinner is-active" />' );
+				$( '#submit', this ).attr( 'disabled', true ).after( '<span class="spinner language-install-spinner is-active" />' );
 			}
 		});
 	} );