diff --git a/dune/gdt/interpolations/default.hh b/dune/gdt/interpolations/default.hh
index 386fb0b79743c41fc799fb58e9e5644978bb7b39..e5feae7fb4a4fb235b3deb2ba159144d85c3af92 100644
--- a/dune/gdt/interpolations/default.hh
+++ b/dune/gdt/interpolations/default.hh
@@ -9,8 +9,8 @@
 //   René Fritze     (2018)
 //   Tobias Leibner  (2018)
 
-#ifndef DUNE_GDT_INTERPOLATIONS_HH
-#define DUNE_GDT_INTERPOLATIONS_HH
+#ifndef DUNE_GDT_INTERPOLATIONS_DEFAULT_HH
+#define DUNE_GDT_INTERPOLATIONS_DEFAULT_HH
 
 #include <vector>
 
@@ -256,4 +256,4 @@ interpolate(const int source_order,
 } // namespace GDT
 } // namespace Dune
 
-#endif // DUNE_GDT_INTERPOLATIONS_HH
+#endif // DUNE_GDT_INTERPOLATIONS_DEFAULT_HH
diff --git a/dune/gdt/prolongations.hh b/dune/gdt/prolongations.hh
index be6f8e1912f3b10139cbeb6189394c72d0cb5ebd..b03a7b42e38ef03780eda392f22a3775b1689d50 100644
--- a/dune/gdt/prolongations.hh
+++ b/dune/gdt/prolongations.hh
@@ -22,7 +22,7 @@
 #include <dune/gdt/discretefunction/bochner.hh>
 #include <dune/gdt/discretefunction/default.hh>
 #include <dune/gdt/discretefunction/reinterpret.hh>
-#include <dune/gdt/interpolations.hh>
+#include <dune/gdt/interpolations/default.hh>
 #include <dune/gdt/spaces/bochner.hh>
 #include <dune/gdt/spaces/interface.hh>
 
diff --git a/dune/gdt/test/inviscid-compressible-flow/base.hh b/dune/gdt/test/inviscid-compressible-flow/base.hh
index 1da67819dabe1687dec443f467ead0f721e15b70..b31d48c27c73fbbc5efe691ce945a07de382e229 100644
--- a/dune/gdt/test/inviscid-compressible-flow/base.hh
+++ b/dune/gdt/test/inviscid-compressible-flow/base.hh
@@ -24,7 +24,7 @@
 #include <dune/xt/functions/base/sliced.hh>
 #include <dune/xt/functions/interfaces/element-functions.hh>
 
-#include <dune/gdt/interpolations.hh>
+#include <dune/gdt/interpolations/default.hh>
 #include <dune/gdt/local/integrands/identity.hh>
 #include <dune/gdt/test/instationary-eocstudies/hyperbolic-nonconforming.hh>
 #include <dune/gdt/tools/euler.hh>
diff --git a/dune/gdt/test/linear-transport/base.hh b/dune/gdt/test/linear-transport/base.hh
index 92a32a1050e30eef8762f3d8de5df395895485c3..35e250ba67ac22150cbfd8c729014544968bf7aa 100644
--- a/dune/gdt/test/linear-transport/base.hh
+++ b/dune/gdt/test/linear-transport/base.hh
@@ -20,7 +20,7 @@
 #include <dune/xt/functions/generic/function.hh>
 #include <dune/xt/grid/gridprovider/cube.hh>
 
-#include <dune/gdt/interpolations.hh>
+#include <dune/gdt/interpolations/default.hh>
 #include <dune/gdt/spaces/interface.hh>
 #include <dune/gdt/test/instationary-eocstudies/hyperbolic-nonconforming.hh>
 
diff --git a/dune/gdt/test/stationary-heat-equation/ESV2007.hh b/dune/gdt/test/stationary-heat-equation/ESV2007.hh
index e9af334de3d0cbbc4dbaa83bf7dd55c2bdc8baa3..c66bf8e121b1894f7921945edb8f74f002979524 100644
--- a/dune/gdt/test/stationary-heat-equation/ESV2007.hh
+++ b/dune/gdt/test/stationary-heat-equation/ESV2007.hh
@@ -20,7 +20,7 @@
 #include <dune/xt/functions/ESV2007.hh>
 #include <dune/xt/functions/constant.hh>
 
-#include <dune/gdt/interpolations.hh>
+#include <dune/gdt/interpolations/default.hh>
 #include <dune/gdt/test/stationary-eocstudies/diffusion-ipdg.hh>
 
 namespace Dune {
diff --git a/examples/adaptive-interpolation.cc b/examples/adaptive-interpolation.cc
index ea77412c07f0a9f4e575f543d8534b82f528736c..ce40c1f3a06fc8996b94db000249c2a4dea0e6d0 100644
--- a/examples/adaptive-interpolation.cc
+++ b/examples/adaptive-interpolation.cc
@@ -33,7 +33,7 @@
 
 #include <dune/gdt/discretefunction/adaptation.hh>
 #include <dune/gdt/discretefunction/default.hh>
-#include <dune/gdt/interpolations.hh>
+#include <dune/gdt/interpolations/default.hh>
 #include <dune/gdt/local/bilinear-forms/integrals.hh>
 #include <dune/gdt/local/integrands/product.hh>
 #include <dune/gdt/spaces/l2/finite-volume.hh>