diff --git a/tck/optional/src/main/java/org/eclipse/microprofile/metrics/test/optional/MPMetricBaseMetricsTest.java b/tck/optional/src/main/java/org/eclipse/microprofile/metrics/test/optional/MPMetricBaseMetricsTest.java
index 1266f384..07ff24e7 100644
--- a/tck/optional/src/main/java/org/eclipse/microprofile/metrics/test/optional/MPMetricBaseMetricsTest.java
+++ b/tck/optional/src/main/java/org/eclipse/microprofile/metrics/test/optional/MPMetricBaseMetricsTest.java
@@ -212,10 +212,10 @@ public void testBaseMetadataSingluarItemsPromMetrics() {
 
                 if (tmp[2].startsWith(promName)) {
                     found = true;
-                    assertEquals("Expected [" + mm.toString() + "] got [" + line + "]", tmp[3], mm.type);
+                    assertEquals("Expected [" + mm + "] got [" + line + "]", tmp[3], mm.type);
                 }
             }
-            assertTrue("Not found [" + mm.toString() + "]", found);
+            assertTrue("Not found [" + mm + "]", found);
 
         }
     }
@@ -425,3 +425,5 @@ public String toString() {
     }
 
 }
+
+
diff --git a/tck/optional/src/main/java/org/eclipse/microprofile/metrics/test/optional/MetricAppBeanOptional.java b/tck/optional/src/main/java/org/eclipse/microprofile/metrics/test/optional/MetricAppBeanOptional.java
index 310976aa..36afc9d7 100644
--- a/tck/optional/src/main/java/org/eclipse/microprofile/metrics/test/optional/MetricAppBeanOptional.java
+++ b/tck/optional/src/main/java/org/eclipse/microprofile/metrics/test/optional/MetricAppBeanOptional.java
@@ -194,7 +194,7 @@ public void getAsync(@Suspended final AsyncResponse asyncResponse) throws Except
                 Thread.sleep(5000);
                 asyncResponse.resume("This is a GET request with AsyncResponse");
             } catch (Exception e) {
-                System.err.println(e.toString());
+                System.err.println(e);
             }
         });
         thread.start();
@@ -250,3 +250,4 @@ public String postUnmappedArithException() throws Exception {
     }
 
 }
+