diff --git a/Geigerzaehler/main.c b/Geigerzaehler/main.c
index 1eed11b..19d59e3 100644
--- a/Geigerzaehler/main.c
+++ b/Geigerzaehler/main.c
@@ -76,7 +76,7 @@ int main()
 				}
 				
 				// Calculate when next high/low should be set
-				boost_highVoltage_nextTick = clock() + 1/(boost_frequency/2)		// Half of time it should be high/low
+				boost_highVoltage_nextTick = clock() + F_CPU * 1/(boost_frequency/2)		// Half of time it should be high/low
 			}
 		}else
 		{