Index: wp-admin/includes/plugin-install.php
===================================================================
--- wp-admin/includes/plugin-install.php	(revision 35592)
+++ wp-admin/includes/plugin-install.php	(working copy)
@@ -491,20 +491,29 @@
 
 	if ( ! empty( $api->banners ) && ( ! empty( $api->banners['low'] ) || ! empty( $api->banners['high'] ) ) ) {
 		$_with_banner = 'with-banner';
-		$low  = empty( $api->banners['low'] ) ? $api->banners['high'] : $api->banners['low'];
-		$high = empty( $api->banners['high'] ) ? $api->banners['low'] : $api->banners['high'];
-		?>
-		<style type="text/css">
-			#plugin-information-title.with-banner {
-				background-image: url( <?php echo esc_url( $low ); ?> );
-			}
-			@media only screen and ( -webkit-min-device-pixel-ratio: 1.5 ) {
-				#plugin-information-title.with-banner {
-					background-image: url( <?php echo esc_url( $high ); ?> );
-				}
-			}
-		</style>
-		<?php
+		$low  = empty( $api->banners['low'] ) ? false : $api->banners['low'];
+		$high = empty( $api->banners['high'] ) ? false : $api->banners['high'];
+		$lowrtl  = empty( $api->banners['low-rtl'] ) ? false : $api->banners['low-rtl'];
+		$highrtl = empty( $api->banners['high-rtl'] ) ? false : $api->banners['high-rtl'];
+		
+		$style = '<style type="text/css">';
+		
+		if ( $low ) {
+			$style .= '#plugin-information-title.with-banner { background-image: url( ' . esc_url( $low ). ' ); }';
+		}
+		if ( $high ) {
+			$style .= '@media only screen and ( -webkit-min-device-pixel-ratio: 1.5 ) { #plugin-information-title.with-banner { background-image: url( ' . esc_url( $high ) . ' ); } }';
+		}
+		if ( $lowrtl ) {
+			$style .= '.rtl #plugin-information-title.with-banner { background-image: url( ' . esc_url( $lowrtl ). ' ); }';
+		}
+		if ( $highrtl ) {
+			$style .= '@media only screen and ( -webkit-min-device-pixel-ratio: 1.5 ) { .rtl #plugin-information-title.with-banner { background-image: url( ' . esc_url( $highrtl ) . ' ); } }';
+		}
+		
+		$style .= '</style>';
+		
+		echo $style;
 	}
 
 	echo '<div id="plugin-information-scrollable">';