diff --git a/src/temperatur.c b/src/temperatur.c
index 33b5e1d..1fbeaf0 100644
--- a/src/temperatur.c
+++ b/src/temperatur.c
@@ -15,7 +15,7 @@ float FzuK(float tempF){
 	return (tempF - 32) * 5/9 + 273.15;
 }
 
-int main(){
+int run_TemperaturRechner(){
 		float var1, var2;
 		int var3;
 		
diff --git a/src/temperatur.h b/src/temperatur.h
index 226e114..1409e5d 100644
--- a/src/temperatur.h
+++ b/src/temperatur.h
@@ -3,6 +3,8 @@
 
 float CzuF(float tempC);
 float CzuK(float tempC);
+
 float FzuC(float tempF);
+float FzuK(float tempF);
 
 #endif //TEMPERATUR_H
diff --git a/test/test_temperatur.c b/test/test_temperatur.c
index 9751fc2..f237aaf 100644
--- a/test/test_temperatur.c
+++ b/test/test_temperatur.c
@@ -33,4 +33,10 @@ float result = FzuC(77);
 float expected = 25;
 TEST_ASSERT_EQUAL(expected, result);
 }
+void test_temperaturRechner_FzuK(void)
+{
+float result = FzuK(77);
+float expected = 298.15;
+TEST_ASSERT_EQUAL(expected, result);
+}
 #endif