diff --git a/es/blatt2/uebung2-1/uebung2-1.ino b/es/blatt2/uebung2-1/uebung2-1.ino
index 0d9a676..306f1cf 100644
--- a/es/blatt2/uebung2-1/uebung2-1.ino
+++ b/es/blatt2/uebung2-1/uebung2-1.ino
@@ -10,7 +10,7 @@ int buttonTwoPin = 3;
 // used to achieve a 1kHz frequency
 // don't touch them
 int compareValue = 60;
-int rc = 10499;
+long rc = 10499;
 
 // this variable is affected by the buttonOne and buttonTwo actions
 int volatile counter = 0;
diff --git a/es/blatt2/uebung2-3/uebung2-3.ino b/es/blatt2/uebung2-3/uebung2-3.ino
index e3e97a7..fa336c8 100644
--- a/es/blatt2/uebung2-3/uebung2-3.ino
+++ b/es/blatt2/uebung2-3/uebung2-3.ino
@@ -16,7 +16,7 @@ bool volatile motorPowerMaxReached = false;
 // used to achieve a 1kHz frequency
 // don't touch them
 int compareValue = 60;
-int rc = 10499;
+long rc = 10499;
 
 int buttonOnePin = 8;
 int buttonTwoPin = 9;
diff --git a/es/blatt3/uebung3-1/uebung3-1.ino b/es/blatt3/uebung3-1/uebung3-1.ino
index 3894d74..620ad5b 100644
--- a/es/blatt3/uebung3-1/uebung3-1.ino
+++ b/es/blatt3/uebung3-1/uebung3-1.ino
@@ -9,7 +9,7 @@ int vref = A0;
 
 // used to achieve a 10 Hz frequency
 // don't touch them
-int rc = 1049999;
+long rc = 1049999;
 
 bool volatile read_ready = false;