diff --git a/android/src/net/sf/openrocket/android/rocket/MotorConfigSpinner.java b/android/src/net/sf/openrocket/android/rocket/MotorConfigSpinner.java
index ce5f2bd45..e85017852 100644
--- a/android/src/net/sf/openrocket/android/rocket/MotorConfigSpinner.java
+++ b/android/src/net/sf/openrocket/android/rocket/MotorConfigSpinner.java
@@ -73,7 +73,7 @@ public class MotorConfigSpinner extends Spinner {
 				}
 				selectedIndex++;
 			}
-			if( selectedIndex > motorConfigs.length ) {
+			if( selectedIndex >= motorConfigs.length ) {
 				selectedIndex = 0;
 			}