diff --git a/apps/opencs/model/world/columnimp.cpp b/apps/opencs/model/world/columnimp.cpp
index 215e4c3dfc..a3b9f3b5ae 100644
--- a/apps/opencs/model/world/columnimp.cpp
+++ b/apps/opencs/model/world/columnimp.cpp
@@ -202,6 +202,8 @@ namespace CSMWorld
             copy.getLandData()->mHeights[i] = values[i];
         }
 
+        copy.mFlags |= Land::FLAG_HEIGHT;
+
         record.setModified(copy);
     }
 
@@ -249,6 +251,8 @@ namespace CSMWorld
             copy.getLandData()->mColours[i] = values[i];
         }
 
+        copy.mFlags |= Land::FLAG_COLOR;
+
         record.setModified(copy);
     }
 
@@ -296,6 +300,8 @@ namespace CSMWorld
             copy.getLandData()->mTextures[i] = values[i];
         }
 
+        copy.mFlags |= Land::FLAG_TEXTURE;
+
         record.setModified(copy);
     }