diff --git a/src/meshes/structured_mesh.jl b/src/meshes/structured_mesh.jl
index 155bad8464a..9e58782ec22 100644
--- a/src/meshes/structured_mesh.jl
+++ b/src/meshes/structured_mesh.jl
@@ -23,7 +23,8 @@ mutable struct StructuredMesh{NDIMS, RealT <: Real} <: AbstractMesh{NDIMS}
 end
 
 """
-    StructuredMesh(cells_per_dimension, mapping; RealT=Float64, unsaved_changes=true, mapping_as_string=mapping2string(mapping, length(cells_per_dimension)))
+    StructuredMesh(cells_per_dimension, mapping; RealT=Float64, unsaved_changes=true, 
+                   mapping_as_string=mapping2string(mapping, length(cells_per_dimension), RealT=Float64))
 
 Create a StructuredMesh of the given size and shape that uses `RealT` as coordinate type.
 
@@ -46,7 +47,8 @@ Create a StructuredMesh of the given size and shape that uses `RealT` as coordin
 function StructuredMesh(cells_per_dimension, mapping; RealT = Float64,
                         periodicity = true, unsaved_changes = true,
                         mapping_as_string = mapping2string(mapping,
-                                                           length(cells_per_dimension)))
+                                                           length(cells_per_dimension),
+                                                           RealT))
     NDIMS = length(cells_per_dimension)
 
     # Convert periodicity to a Tuple of a Bool for every dimension
@@ -95,7 +97,7 @@ function StructuredMesh(cells_per_dimension, faces::Tuple; RealT = Float64,
     mapping = transfinite_mapping(faces)
 
     # Collect definitions of face functions in one string (separated by semicolons)
-    face2substring(face) = code_string(face, ntuple(_ -> Float64, NDIMS - 1))
+    face2substring(face) = code_string(face, ntuple(_ -> RealT, NDIMS - 1))
     join_newline(strings) = join(strings, "\n")
 
     faces_definition = faces .|> face2substring .|> string |> join_newline
@@ -141,8 +143,8 @@ function StructuredMesh(cells_per_dimension, coordinates_min, coordinates_max;
 end
 
 # Extract a string of the code that defines the mapping function
-function mapping2string(mapping, ndims)
-    string(code_string(mapping, ntuple(_ -> Float64, ndims)))
+function mapping2string(mapping, ndims, RealT = Float64)
+    string(code_string(mapping, ntuple(_ -> RealT, ndims)))
 end
 
 # An internal function wrapping `CodeTracking.code_string` with additional