diff --git a/src/DataWrangling/ECCO/ECCO_restoring.jl b/src/DataWrangling/ECCO/ECCO_restoring.jl
index 5f090cf0..7400d0f7 100644
--- a/src/DataWrangling/ECCO/ECCO_restoring.jl
+++ b/src/DataWrangling/ECCO/ECCO_restoring.jl
@@ -353,12 +353,13 @@ end
 ECCORestoring(variable_name::Symbol; kw...) = ECCORestoring(CPU(), variable_name; kw...)
 ECCORestoring(metadata::ECCOMetadata; kw...) = ECCORestoring(CPU(), metadata; kw...)
 
-Base.show(io::IO, p::ECCORestoring) = 
-    print(io, "Three-dimensional restoring to ECCO data:", '\n',
+function Base.show(io::IO, p::ECCORestoring)
+    print(io, "ECCORestoring:", '\n',
               "├── restored variable: ", summary(p.variable_name), '\n',
               "├── restoring dataset: ", summary(p.field_time_series.backend.metadata), '\n',
               "├── restoring rate: ", p.rate, '\n',
               "├── mask: ", summary(p.mask), '\n',
               "└── grid: ", summary(p.grid))
+end
 
 regularize_forcing(forcing::ECCORestoring, field, field_name, model_field_names) = forcing
diff --git a/src/OceanSimulations/OceanSimulations.jl b/src/OceanSimulations/OceanSimulations.jl
index 9d583e6e..8c95965b 100644
--- a/src/OceanSimulations/OceanSimulations.jl
+++ b/src/OceanSimulations/OceanSimulations.jl
@@ -108,6 +108,16 @@ function ocean_simulation(grid;
         u_immersed_bc = nothing
         v_immersed_bc = nothing
     else
+        if !(grid isa ImmersedBoundaryGrid)
+            msg = """Are you totally, 100% sure that you want to build a simulation on
+
+                   $(summary(grid))
+
+                   rather than on an ImmersedBoundaryGrid?
+                   """
+            @warn msg
+        end
+
         bottom_drag_coefficient = default_or_override(bottom_drag_coefficient)
         
         u_immersed_drag = FluxBoundaryCondition(u_immersed_bottom_drag, discrete_form=true, parameters=bottom_drag_coefficient)