diff -ruN a/tests/004_WKBWriter.phpt b/tests/004_WKBWriter.phpt
--- a/tests/004_WKBWriter.phpt	2021-07-13 15:29:50.681200427 +0300
+++ b/tests/004_WKBWriter.phpt	2021-07-13 15:32:31.316705573 +0300
@@ -139,7 +139,7 @@
             $writer->write(1);
             $this->assertTrue(false);
         } catch (ErrorException $e) {
-            $this->assertContains('expects parameter 1 to be object, integer given', $e->getMessage());
+            $this->assertContains('expects parameter 1 to be object, int given', $e->getMessage());
         }
     }
 
@@ -151,7 +151,7 @@
             $writer->writeHEX(1);
             $this->assertTrue(false);
         } catch (ErrorException $e) {
-            $this->assertContains('expects parameter 1 to be object, integer given', $e->getMessage());
+            $this->assertContains('expects parameter 1 to be object, int given', $e->getMessage());
         }
     }
 }