Missed one warning.
diff --git a/activemq-cpp/src/test/decaf/util/BitSetTest.cpp b/activemq-cpp/src/test/decaf/util/BitSetTest.cpp
index ca6057e..32d1b9d 100644
--- a/activemq-cpp/src/test/decaf/util/BitSetTest.cpp
+++ b/activemq-cpp/src/test/decaf/util/BitSetTest.cpp
@@ -310,7 +310,7 @@
             }
         }
         for (int i = 9; i < 74; i++) {
-            CPPUNIT_ASSERT_MESSAGE("Failed to clear bit " + i, !bs.get(i));
+            CPPUNIT_ASSERT_MESSAGE("Failed to clear bit " + Integer::toString(i), !bs.get(i));
         }
         for (int i = 74; i < initialSize; i++) {
             if (i == 110) {