diff --git a/src/wp-admin/customize.php b/src/wp-admin/customize.php
index 89d385d7bf..eea5ddcdbb 100644
--- a/src/wp-admin/customize.php
+++ b/src/wp-admin/customize.php
@@ -192,9 +192,9 @@ do_action( 'customize_controls_print_scripts' );
 				<?php endforeach; ?>
 			</div>
 			<?php endif; ?>
-			<button type="button" class="collapse-sidebar button" aria-expanded="true" aria-label="<?php esc_attr_e( 'Collapse Sidebar' ); ?>">
+			<button type="button" class="collapse-sidebar button" aria-expanded="true" aria-label="<?php esc_attr_e( 'Hide Controls' ); ?>">
 				<span class="collapse-sidebar-arrow"></span>
-				<span class="collapse-sidebar-label"><?php _e( 'Collapse' ); ?></span>
+				<span class="collapse-sidebar-label"><?php _e( 'Hide Controls' ); ?></span>
 			</button>
 		</div>
 	</form>
diff --git a/src/wp-includes/script-loader.php b/src/wp-includes/script-loader.php
index 378ce1a29e..78a18a0bfc 100644
--- a/src/wp-includes/script-loader.php
+++ b/src/wp-includes/script-loader.php
@@ -465,8 +465,8 @@ function wp_default_scripts( &$scripts ) {
 		'notAllowed'         => __( 'Sorry, you are not allowed to customize this site.' ),
 		'previewIframeTitle' => __( 'Site Preview' ),
 		'loginIframeTitle'   => __( 'Session expired' ),
-		'collapseSidebar'    => __( 'Collapse Sidebar' ),
-		'expandSidebar'      => __( 'Expand Sidebar' ),
+		'collapseSidebar'    => __( 'Hide Controls' ),
+		'expandSidebar'      => __( 'Show Controls' ),
 		'untitledBlogName'   => __( '(Untitled)' ),
 		// Used for overriding the file types allowed in plupload.
 		'allowedFiles'       => __( 'Allowed Files' ),