diff --git a/CppTimerStdFuncCallback.h b/CppTimerStdFuncCallback.h
index 96dad53..2a52781 100644
--- a/CppTimerStdFuncCallback.h
+++ b/CppTimerStdFuncCallback.h
@@ -19,7 +19,7 @@ class CppTimerCallback : public CppTimer {
     }
     
     void timerEvent() {
-	if (!(callbackFunction == nullptr)) {
+	if (nullptr != callbackFunction) {
 	    callbackFunction();
 	}
     }
diff --git a/demo_stdfunccallback.cpp b/demo_stdfunccallback.cpp
index 5b2b4f2..9474282 100644
--- a/demo_stdfunccallback.cpp
+++ b/demo_stdfunccallback.cpp
@@ -18,7 +18,7 @@ class ReceiverClass1 {
 class ReceiverClass2 {
 public:
     void run() {
-	fprintf(stdout,"Buh! \n");
+	fprintf(stdout,"BUH! \n");
 	fflush(stdout);
     }
 };