Index: core/admin_templates/logs/system_logs/system_log_edit.tpl
===================================================================
--- core/admin_templates/logs/system_logs/system_log_edit.tpl
+++ core/admin_templates/logs/system_logs/system_log_edit.tpl
@@ -65,6 +65,11 @@
 		margin-top: 4px;
 	}
 
+	div.highlight-area pre.sf-dump {
+		margin: 0;
+		padding: 0;
+	}
+
 	.log_backtrace {
 		margin: 0;
 		padding-left: 25px;
Index: core/units/logs/system_logs/system_log_tp.php
===================================================================
--- core/units/logs/system_logs/system_log_tp.php
+++ core/units/logs/system_logs/system_log_tp.php
@@ -92,9 +92,7 @@
 			return '';
 		}
 
-		$value = print_r(unserialize($value), true);
-
-		return $this->highlightString($value);
+		return kUtil::varDumpColorized(unserialize($value), 'system-log-edit');
 	}
 
 	/**
@@ -143,7 +141,12 @@
 			$block_params['has_code_fragment'] = isset($trace_info['code_fragment']);
 
 			if ( $include_args ) {
-				$block_params['args'] = $block_params['has_args'] ? $this->highlightString(print_r($trace_info['args'], true)) : '';
+				if ( $block_params['has_args'] ) {
+					$block_params['args'] = kUtil::varDumpColorized($trace_info['args'], 'system-log-edit');
+				}
+				else {
+					$block_params['args'] = '';
+				}
 			}
 
 			if ( $include_code_fragment ) {