Index: wp-admin/includes/class-theme-installer-skin.php
===================================================================
--- wp-admin/includes/class-theme-installer-skin.php	(revision 48287)
+++ wp-admin/includes/class-theme-installer-skin.php	(working copy)
@@ -134,7 +134,7 @@
 			esc_url( $activate_link ),
 			__( 'Activate' ),
 			/* translators: %s: Theme name. */
-			sprintf( __( 'Activate “%s”' ), $name )
+			sprintf( _x( 'Activate “%s”', 'theme' ), $name )
 		);
 
 		if ( is_network_admin() && current_user_can( 'manage_network_themes' ) ) {
Index: wp-admin/includes/class-theme-upgrader-skin.php
===================================================================
--- wp-admin/includes/class-theme-upgrader-skin.php	(revision 48287)
+++ wp-admin/includes/class-theme-upgrader-skin.php	(working copy)
@@ -94,7 +94,7 @@
 					esc_url( $activate_link ),
 					__( 'Activate' ),
 					/* translators: %s: Theme name. */
-					sprintf( __( 'Activate “%s”' ), $name )
+					sprintf( _x( 'Activate “%s”', 'theme' ), $name )
 				);
 			}
 
Index: wp-admin/includes/class-wp-themes-list-table.php
===================================================================
--- wp-admin/includes/class-wp-themes-list-table.php	(revision 48287)
+++ wp-admin/includes/class-wp-themes-list-table.php	(working copy)
@@ -212,7 +212,7 @@
 				'<a href="%s" class="activatelink" title="%s">%s</a>',
 				$activate_link,
 				/* translators: %s: Theme name. */
-				esc_attr( sprintf( __( 'Activate &#8220;%s&#8221;' ), $title ) ),
+				esc_attr( sprintf( _x( 'Activate &#8220;%s&#8221;', 'theme' ), $title ) ),
 				__( 'Activate' )
 			);