diff --git a/CHANGELOG.md b/CHANGELOG.md
index c6e1924..ada4831 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,12 @@ All Notable changes to `json-api-server` will be documented in this file.
 
 Updates should follow the [Keep a CHANGELOG](http://keepachangelog.com/) principles.
 
+## Unreleased
+
+### Fixed
+
+- Extra check so that uncountable data is not counted when getting relationships (Issue #20, thanks @bondas83)
+
 ## 0.3.4
 
 ### Fixed
diff --git a/src/Http/Resources/BaseApiResource.php b/src/Http/Resources/BaseApiResource.php
index 037db40..86f1422 100644
--- a/src/Http/Resources/BaseApiResource.php
+++ b/src/Http/Resources/BaseApiResource.php
@@ -165,7 +165,7 @@ protected function relationships()
             }
 
             $data = $this->resource->$relationship;
-            if (0 == count($data)) {
+            if ((is_array($data) || $data instanceof \Countable) && 0 == count($data)) {
                 continue;
             }