diff --git a/MapProjections/Shared/Etrs89UtmProjection.cs b/MapProjections/Shared/Etrs89UtmProjection.cs
index 71f1ba14..7d5335d3 100644
--- a/MapProjections/Shared/Etrs89UtmProjection.cs
+++ b/MapProjections/Shared/Etrs89UtmProjection.cs
@@ -30,7 +30,7 @@ namespace MapControl.Projections
                 = $"PROJCS[\"ETRS89 / UTM zone {zone}N\","
                 + "GEOGCS[\"ETRS89\","
                 + "DATUM[\"European_Terrestrial_Reference_System_1989\","
-                + "SPHEROID[\"GRS 1980\",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],"
+                + "SPHEROID[\"GRS 1980\",6378137,298.257222101]],"
                 + "PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",\"8901\"]],"
                 + "UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],"
                 + "AUTHORITY[\"EPSG\",\"4258\"]],"
diff --git a/MapProjections/Shared/Nad83UtmProjection.cs b/MapProjections/Shared/Nad83UtmProjection.cs
index 05046a4d..75ca7f56 100644
--- a/MapProjections/Shared/Nad83UtmProjection.cs
+++ b/MapProjections/Shared/Nad83UtmProjection.cs
@@ -30,7 +30,7 @@ namespace MapControl.Projections
                 = $"PROJCS[\"NAD83 / UTM zone {zone}N\","
                 + "GEOGCS[\"NAD83\","
                 + "DATUM[\"North_American_Datum_1983\","
-                + "SPHEROID[\"GRS 1980\",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],"
+                + "SPHEROID[\"GRS 1980\",6378137,298.257222101]],"
                 + "PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",\"8901\"]],"
                 + "UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],"
                 + "AUTHORITY[\"EPSG\",\"4269\"]],"