diff --git a/src/Objects/Sources/MSSQLSource.php b/src/Objects/Sources/MSSQLSource.php
index 6ff28f4..30ea221 100644
--- a/src/Objects/Sources/MSSQLSource.php
+++ b/src/Objects/Sources/MSSQLSource.php
@@ -8,7 +8,7 @@
 
 class MSSQLSource extends PDOSource implements SourceInterface
 {
-    public function setOverrideSQL($overrideSQL) : SourceInterface
+    public function setOverrideSQL($overrideSQL): SourceInterface
     {
         $selectString = 'SELECT ';
 
diff --git a/src/Objects/Sources/PDOSource.php b/src/Objects/Sources/PDOSource.php
index 33267a7..36e38d0 100644
--- a/src/Objects/Sources/PDOSource.php
+++ b/src/Objects/Sources/PDOSource.php
@@ -43,7 +43,7 @@ protected function getTableFields()
         return $tableFields;
     }
 
-    public function addJoin(Join $join) : SourceInterface
+    public function addJoin(Join $join): SourceInterface
     {
         $this->joins[] = $join;
         $this->fields = $this->getTableFields();
@@ -51,7 +51,7 @@ public function addJoin(Join $join) : SourceInterface
         return $this;
     }
 
-    public function setOverrideSQL($overrideSQL) : SourceInterface
+    public function setOverrideSQL($overrideSQL): SourceInterface
     {
         $selectString = 'SELECT ';
 
@@ -71,7 +71,7 @@ public function setOverrideSQL($overrideSQL) : SourceInterface
         return $this;
     }
 
-    public function setPerPage($perPage = 10) : SourceInterface
+    public function setPerPage($perPage = 10): SourceInterface
     {
         $this->perPage = $perPage;