diff --git a/library/Icinga/Web/LessCompiler.php b/library/Icinga/Web/LessCompiler.php
index cbf486122..2c156ac1d 100644
--- a/library/Icinga/Web/LessCompiler.php
+++ b/library/Icinga/Web/LessCompiler.php
@@ -3,6 +3,7 @@
 
 namespace Icinga\Web;
 
+use Exception;
 use Icinga\Application\Logger;
 use Icinga\Util\LessParser;
 
@@ -249,10 +250,14 @@ class LessCompiler
             $this->source .= file_get_contents($this->themeMode);
         }
 
-        return preg_replace(
-            '/(\.icinga-module\.module-[^\s]+) (#layout\.[^\s]+)/m',
-            '\2 \1',
-            $this->lessc->compile($this->source)
-        );
+        try {
+            return preg_replace(
+                '/(\.icinga-module\.module-[^\s]+) (#layout\.[^\s]+)/m',
+                '\2 \1',
+                $this->lessc->compile($this->source)
+            );
+        } catch (Exception $e) {
+            return sprintf("%s\n%s\n\n\n%s", $e->getMessage(), $e->getTraceAsString(), substr($this->source, $e->index - 250, 500));
+        }
     }
 }