diff --git a/core/resources/l10n/messages.properties b/core/resources/l10n/messages.properties
index 459cc134b..c63e110ca 100644
--- a/core/resources/l10n/messages.properties
+++ b/core/resources/l10n/messages.properties
@@ -1865,7 +1865,7 @@ Warning.TUBE_SEPARATION = Space between tube fins may not result in accurate sim
 Warning.TUBE_OVERLAP = Overlapping tube fins may not result in accurate simulations.
 Warning.EMPTY_BRANCH = Simulation branch contains no data
 Warning.SEPARATION_ORDER = Stages separated in an unreasonable order
-Warning.RAILBUTTON_TRANSONIC = Railbutton drag calculations may be inaccurate at transonic or supersonic speeds
+
 ! Scale dialog
 ScaleDialog.lbl.scaleRocket = Entire rocket
 ScaleDialog.lbl.scaleSubselection = Selection and all subcomponents
diff --git a/core/src/net/sf/openrocket/aerodynamics/Warning.java b/core/src/net/sf/openrocket/aerodynamics/Warning.java
index 2a3ff0eff..ae7c94e35 100644
--- a/core/src/net/sf/openrocket/aerodynamics/Warning.java
+++ b/core/src/net/sf/openrocket/aerodynamics/Warning.java
@@ -399,6 +399,4 @@ public abstract class Warning {
 	public static final Warning SEPARATION_ORDER = new Other(trans.get("Warning.SEPARATION_ORDER"));
 
 	public static final Warning EMPTY_BRANCH = new Other(trans.get("Warning.EMPTY_BRANCH"));
-
-	public static final Warning RAILBUTTON_TRANSONIC = new Other(trans.get("Warning.RAILBUTTON_TRANSONIC"));
 }
diff --git a/core/src/net/sf/openrocket/aerodynamics/barrowman/RailButtonCalc.java b/core/src/net/sf/openrocket/aerodynamics/barrowman/RailButtonCalc.java
index e76e5de00..a1800cf30 100644
--- a/core/src/net/sf/openrocket/aerodynamics/barrowman/RailButtonCalc.java
+++ b/core/src/net/sf/openrocket/aerodynamics/barrowman/RailButtonCalc.java
@@ -8,7 +8,6 @@ import org.slf4j.LoggerFactory;
 
 import net.sf.openrocket.aerodynamics.AerodynamicForces;
 import net.sf.openrocket.aerodynamics.FlightConditions;
-import net.sf.openrocket.aerodynamics.Warning;
 import net.sf.openrocket.aerodynamics.WarningSet;
 import net.sf.openrocket.rocketcomponent.RailButton;
 import net.sf.openrocket.rocketcomponent.RocketComponent;
@@ -97,7 +96,6 @@ public class RailButtonCalc extends RocketComponentCalc {
 			// add to CDmul
 			CDmul += cd;
 		}
-		
 		return CDmul*stagnationCD * refArea / conditions.getRefArea();
 	}
 }