diff --git a/cgogn/io/surface/surface_import.cpp b/cgogn/io/surface/surface_import.cpp
index 52aaf693f..4d22dea61 100644
--- a/cgogn/io/surface/surface_import.cpp
+++ b/cgogn/io/surface/surface_import.cpp
@@ -207,6 +207,11 @@ void import_surface_data(CMap2& m, SurfaceImportData2D& surface_data, bool recon
 	import_surface_data_map_tmpl<CMap2, SurfaceImportData2D>(m, surface_data,reconstruct_phi2);
 }
 
+void import_surface_data(GMap2& m, SurfaceImportData2D& surface_data, bool reconstruct_phi2)
+{
+	import_surface_data_map_tmpl<GMap2, SurfaceImportData2D>(m, surface_data, reconstruct_phi2);
+}
+
 void import_surface_data(IncidenceGraph& ig, SurfaceImportData& surface_data)
 {
 	using Vertex = IncidenceGraph::Vertex;
diff --git a/cgogn/io/surface/surface_import.h b/cgogn/io/surface/surface_import.h
index 6b3f517f0..5df8d29d6 100644
--- a/cgogn/io/surface/surface_import.h
+++ b/cgogn/io/surface/surface_import.h
@@ -77,7 +77,7 @@ using SurfaceImportData = SurfaceImportDataTGen<Vec3>;
 using SurfaceImportData2D = SurfaceImportDataTGen<Vec2>;
 
 
-void CGOGN_IO_EXPORT import_surface_data(CMap2& m, SurfaceImportData& surface_data, bool reconstruct_phi2=true);
+void CGOGN_IO_EXPORT import_surface_data(CMap2& m, SurfaceImportData& surface_data, bool reconstruct_phi2 = true);
 void CGOGN_IO_EXPORT import_surface_data(GMap2& m, SurfaceImportData& surface_data, bool reconstruct_phi2 = true);
 void CGOGN_IO_EXPORT import_surface_data(IncidenceGraph& m, SurfaceImportData& surface_data);
 void CGOGN_IO_EXPORT import_surface_data(TriangleSoup& m, SurfaceImportData& surface_data);