diff --git a/themes/bs_bootstrap/bs_bootstrap.theme b/themes/bs_bootstrap/bs_bootstrap.theme
index 1606e84..c4b05ca 100644
--- a/themes/bs_bootstrap/bs_bootstrap.theme
+++ b/themes/bs_bootstrap/bs_bootstrap.theme
@@ -388,16 +388,15 @@ function bs_bootstrap_preprocess_block(&$variables) {
             if (bs_bootstrap_get_setting('logo_svg_inline')) {
               $variables['site_logo_svg'] = $svg_content;
             }
-            else {
-              // Get the logo width and height from SVG image.
+            // For img SVG get the logo width and height from SVG.
+            elseif (\Drupal::getContainer()->has('bs_lib.svg_tools')) {
               /** @var \Drupal\bs_lib\SvgTools $svg_tools */
               $svg_tools = \Drupal::service('bs_lib.svg_tools');
-              $dimensions = $svg_tools->getDimensions($svg_content);
-              if (isset($dimensions['width'])) {
-                $logo_attributes['width'] = $dimensions['width'];
-              }
-              if (isset($dimensions['height'])) {
-                $logo_attributes['height'] = $dimensions['height'];
+              if ($dimensions = $svg_tools->getDimensions($svg_content)) {
+                if (isset($dimensions['width']) && isset($dimensions['height'])) {
+                  $logo_attributes['width'] = $dimensions['width'];
+                  $logo_attributes['height'] = $dimensions['height'];
+                }
               }
             }
           }