diff --git a/DataStorage/Database/Mapper/ReadMapper.php b/DataStorage/Database/Mapper/ReadMapper.php
index 156d7fad2..9dc020ad0 100755
--- a/DataStorage/Database/Mapper/ReadMapper.php
+++ b/DataStorage/Database/Mapper/ReadMapper.php
@@ -235,8 +235,8 @@ final class ReadMapper extends DataMapperAbstract
         } catch (\Throwable $t) {
             $results = false;
 
-            \var_dump($q = $query->toSql());
-            \var_dump($t->getMessage());
+            $q = $query->toSql(); // @debug
+            $m = $t->getMessage(); // @debug
         }
 
         return $results === false ? [] : $results;
diff --git a/DataStorage/Database/Mapper/WriteMapper.php b/DataStorage/Database/Mapper/WriteMapper.php
index 0645aaee4..984df82a4 100755
--- a/DataStorage/Database/Mapper/WriteMapper.php
+++ b/DataStorage/Database/Mapper/WriteMapper.php
@@ -169,9 +169,9 @@ final class WriteMapper extends DataMapperAbstract
             return $objId;
         } catch (\Throwable $t) {
             // @codeCoverageIgnoreStart
-            \var_dump($t->getMessage());
-            \var_dump($a = $query->toSql());
-            \var_dump(\debug_backtrace());
+            $a = $t->getMessage(); // @debug
+            $b = $query->toSql(); // @debug
+            $c = \debug_backtrace(); // @debug
 
             return -1;
             // @codeCoverageIgnoreEND
@@ -396,9 +396,9 @@ final class WriteMapper extends DataMapperAbstract
             }
         } catch (\Throwable $t) {
             // @codeCoverageIgnoreStart
-            \var_dump($t->getMessage());
-            \var_dump($relQuery->toSql());
-            \var_dump(\debug_backtrace());
+            $a = $t->getMessage(); // @debug
+            $b = $relQuery->toSql(); // @debug
+            $c = \debug_backtrace(); // @debug
             // @codeCoverageIgnoreEnd
         }
     }