Index: trunk/src/org/openstreetmap/josm/data/projection/CustomProjection.java
===================================================================
--- trunk/src/org/openstreetmap/josm/data/projection/CustomProjection.java	(revision 5201)
+++ trunk/src/org/openstreetmap/josm/data/projection/CustomProjection.java	(revision 5202)
@@ -217,5 +217,5 @@
         } catch (NumberFormatException e) {
             throw new ProjectionConfigurationException(
-                    tr("Unable to parse value of ''{0}'' parameter ''{0}'' as number.", parameterName, doubleStr));
+                    tr("Unable to parse value ''{1}'' of parameter ''{0}'' as number.", parameterName, doubleStr));
         }
     }
@@ -276,5 +276,5 @@
         if (!s.isEmpty()) {
             throw new ProjectionConfigurationException(
-                    tr("Unable to parse value of ''{0}'' parameter ''{0}'' as coordinate value.", parameterName, angleStr));
+                    tr("Unable to parse value ''{1}'' of parameter ''{0}'' as coordinate value.", parameterName, angleStr));
         }
         return value;