diff --git a/test/timer/timer_callback_done.cpp b/test/timer/timer_callback_done.cpp
new file mode 100644
index 0000000..29ab72b
--- /dev/null
+++ b/test/timer/timer_callback_done.cpp
@@ -0,0 +1,32 @@
+#include "suite.hpp"
+
+#include <sdbusplus/timer.hpp>
+
+#include <chrono>
+
+#include <gtest/gtest.h>
+
+/** @brief Makes sure that optional callback is called */
+TEST_F(TimerTestCallBack, optionalFuncCallBackDone)
+{
+    using namespace std::chrono;
+
+    auto time = duration_cast<microseconds>(seconds(2));
+    EXPECT_GE(timer->start(time), 0);
+
+    // Waiting 2 seconds is enough here since we have
+    // already spent some usec now
+    int count = 0;
+    while (count < 2 && !timer->isExpired())
+    {
+        // Returns -0- on timeout and positive number on dispatch
+        auto sleepTime = duration_cast<microseconds>(seconds(1));
+        if (!sd_event_run(events, sleepTime.count()))
+        {
+            count++;
+        }
+    }
+    EXPECT_EQ(true, timer->isExpired());
+    EXPECT_EQ(true, callBackDone);
+    EXPECT_EQ(1, count);
+}