diff --git a/MCGalaxy/Drawing/TransformFactories/SimpleTransforms.cs b/MCGalaxy/Drawing/TransformFactories/SimpleTransforms.cs
index f27824a2b..9a3e82915 100644
--- a/MCGalaxy/Drawing/TransformFactories/SimpleTransforms.cs
+++ b/MCGalaxy/Drawing/TransformFactories/SimpleTransforms.cs
@@ -16,10 +16,11 @@
     permissions and limitations under the Licenses.
  */
 using System;
+using MCGalaxy.Commands;
 using MCGalaxy.Commands.Building;
 
 namespace MCGalaxy.Drawing.Transforms {
-    public sealed class NoTransformFactory : TransformFactory { 
+    public sealed class NoTransformFactory : TransformFactory {
         public override string Name { get { return "None"; } }
         public override string[] Help { get { return HelpString; } }
         
@@ -28,8 +29,8 @@ namespace MCGalaxy.Drawing.Transforms {
             "%HDoes not affect the output of draw operations.",
         };
         
-        public override Transform Construct(Player p, string message) { 
-            return NoTransform.Instance; 
+        public override Transform Construct(Player p, string message) {
+            return NoTransform.Instance;
         }
     }
     
@@ -42,7 +43,7 @@ namespace MCGalaxy.Drawing.Transforms {
             "%TAlternatively: [scale] <centre>",
             "%H[scale] values can be an integer or a fraction (e.g. 2 or 1/2).",
             "%H[centre] if given, indicates to scale from the centre of a draw operation, " +
-            "instead of outwards from the first mark. Recommended for cuboid and cylinder.",
+                "instead of outwards from the first mark. Recommended for cuboid and cylinder.",
         };
         
         public override Transform Construct(Player p, string message) {
@@ -51,16 +52,17 @@ namespace MCGalaxy.Drawing.Transforms {
             int mul = 0, div = 0;
             ScaleTransform scaler = new ScaleTransform();
             
-            if (!ParseFraction(p, args[0], out mul, out div)) return null;
             if (args.Length <= 2) {
+                if (!ParseFraction(p, args[0], "Scale", out mul, out div)) return null;
                 scaler.XMul = mul; scaler.XDiv = div;
                 scaler.YMul = mul; scaler.YDiv = div;
                 scaler.ZMul = mul; scaler.ZDiv = div;
             } else {
+                if (!ParseFraction(p, args[0], "X scale", out mul, out div)) return null;
                 scaler.XMul = mul; scaler.XDiv = div;
-                if (!ParseFraction(p, args[1], out mul, out div)) return null;
+                if (!ParseFraction(p, args[1], "Y scale", out mul, out div)) return null;
                 scaler.YMul = mul; scaler.YDiv = div;
-                if (!ParseFraction(p, args[2], out mul, out div)) return null;
+                if (!ParseFraction(p, args[2], "Z scale", out mul, out div)) return null;
                 scaler.ZMul = mul; scaler.ZDiv = div;
             }
 
@@ -72,21 +74,22 @@ namespace MCGalaxy.Drawing.Transforms {
             return scaler;
         }
         
-        static bool ParseFraction(Player p, string input, out int mul, out int div) {
+        static bool ParseFraction(Player p, string input, string argName, out int mul, out int div) {
             int sep = input.IndexOf('/');
-            bool success = false;
-            div = 1;
+            div = 1; mul = 1;
             
             if (sep == -1) { // single whole number
-                success = int.TryParse(input, out mul);
-            } else {
-                string top = input.Substring(0, sep), bottom = input.Substring(sep + 1);
-                success = int.TryParse(top, out mul) && int.TryParse(bottom, out div);
+                return CommandParser.GetInt(p, input, argName, ref mul, -32, 32);
             }
             
-            if (mul > 32 || mul < -32) { Player.Message(p, "Scale must be between -32 and 32."); return false; }
-            if (!success) { Player.MessageLines(p, HelpString); }
-            return success;
+            string top = input.Substring(0, sep), bottom = input.Substring(sep + 1);
+            if (!CommandParser.GetInt(p, top,    argName + " (numerator)",   ref mul, -32768, 32768)) return false;
+            if (!CommandParser.GetInt(p, bottom, argName + " (denominator)", ref div, -32768, 32768)) return false;
+            
+            if (div == 0) { Player.Message(p, "Cannot divide by 0."); return false; }
+            float fract = mul / (float)div;
+            if (Math.Abs(fract) > 32) { Player.Message(p, argName + " must be between -32 and 32."); return false; }
+            return true;
         }
     }
 }