diff --git a/plugins/API/API.php b/plugins/API/API.php
index ff6690fdf2ac07ee558c0f5bedbc12ad234c4ff8..fb1e5ae66992e9299b9a59e81bf8fd52d9a88b20 100644
--- a/plugins/API/API.php
+++ b/plugins/API/API.php
@@ -189,12 +189,12 @@ class API extends \Piwik\Plugin\API
                 unset($segment['sqlFilter']);
                 unset($segment['sqlFilterValue']);
                 unset($segment['sqlSegment']);
-            }
 
-            if (isset($segment['suggestedValuesCallback'])
-                && !is_string($segment['suggestedValuesCallback'])
-            ) {
-                unset($segment['suggestedValuesCallback']);
+                if (isset($segment['suggestedValuesCallback'])
+                    && !is_string($segment['suggestedValuesCallback'])
+                ) {
+                    unset($segment['suggestedValuesCallback']);
+                }
             }
         }