diff --git a/dumux/porousmediumflow/3p/CMakeLists.txt b/dumux/porousmediumflow/3p/CMakeLists.txt
index ba8341c614f1a2c797c95f5402f602025f1087b1..051356e5b04d2a83a737a24b4d7e10f8569a2eb6 100644
--- a/dumux/porousmediumflow/3p/CMakeLists.txt
+++ b/dumux/porousmediumflow/3p/CMakeLists.txt
@@ -1 +1,8 @@
-add_subdirectory("implicit")
+
+#install headers
+install(FILES
+indices.hh
+model.hh
+volumevariables.hh
+vtkoutputfields.hh
+DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/dumux/porousmediumflow/3p)
diff --git a/dumux/porousmediumflow/3p/implicit/CMakeLists.txt b/dumux/porousmediumflow/3p/implicit/CMakeLists.txt
deleted file mode 100644
index 48f1bbb3758600a78248f419aaee6d68d76f4363..0000000000000000000000000000000000000000
--- a/dumux/porousmediumflow/3p/implicit/CMakeLists.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-
-#install headers
-install(FILES
-indices.hh
-model.hh
-volumevariables.hh
-vtkoutputfields.hh
-DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/dumux/porousmediumflow/3p/implicit)
diff --git a/dumux/porousmediumflow/3p/implicit/indices.hh b/dumux/porousmediumflow/3p/indices.hh
similarity index 100%
rename from dumux/porousmediumflow/3p/implicit/indices.hh
rename to dumux/porousmediumflow/3p/indices.hh
diff --git a/dumux/porousmediumflow/3p/implicit/model.hh b/dumux/porousmediumflow/3p/model.hh
similarity index 100%
rename from dumux/porousmediumflow/3p/implicit/model.hh
rename to dumux/porousmediumflow/3p/model.hh
diff --git a/dumux/porousmediumflow/3p/implicit/volumevariables.hh b/dumux/porousmediumflow/3p/volumevariables.hh
similarity index 100%
rename from dumux/porousmediumflow/3p/implicit/volumevariables.hh
rename to dumux/porousmediumflow/3p/volumevariables.hh
diff --git a/dumux/porousmediumflow/3p/implicit/vtkoutputfields.hh b/dumux/porousmediumflow/3p/vtkoutputfields.hh
similarity index 100%
rename from dumux/porousmediumflow/3p/implicit/vtkoutputfields.hh
rename to dumux/porousmediumflow/3p/vtkoutputfields.hh
diff --git a/test/porousmediumflow/3p/implicit/3pniconductionproblem.hh b/test/porousmediumflow/3p/implicit/3pniconductionproblem.hh
index 48568447d9c5fa4074e43b1b27d8426d700b2d80..5656c03afddd0bb0a7d74ba0614579f8ab39ab84 100644
--- a/test/porousmediumflow/3p/implicit/3pniconductionproblem.hh
+++ b/test/porousmediumflow/3p/implicit/3pniconductionproblem.hh
@@ -30,7 +30,7 @@
 #include <dumux/discretization/cellcentered/mpfa/properties.hh>
 #include <dumux/discretization/box/properties.hh>
 #include <dumux/porousmediumflow/problem.hh>
-#include <dumux/porousmediumflow/3p/implicit/model.hh>
+#include <dumux/porousmediumflow/3p/model.hh>
 #include <dumux/material/fluidsystems/h2oairmesitylene.hh>
 #include <dumux/material/components/h2o.hh>
 #include <dumux/material/fluidmatrixinteractions/3p/thermalconductivitysomerton3p.hh>
diff --git a/test/porousmediumflow/3p/implicit/3pniconvectionproblem.hh b/test/porousmediumflow/3p/implicit/3pniconvectionproblem.hh
index bed0617a8dd8d669840904deede0b08cf46aa4de..143dbd45a7bcbdcfdb7f786958ec252c23afdd4c 100644
--- a/test/porousmediumflow/3p/implicit/3pniconvectionproblem.hh
+++ b/test/porousmediumflow/3p/implicit/3pniconvectionproblem.hh
@@ -30,7 +30,7 @@
 #include <dumux/discretization/cellcentered/mpfa/properties.hh>
 #include <dumux/discretization/box/properties.hh>
 #include <dumux/porousmediumflow/problem.hh>
-#include <dumux/porousmediumflow/3p/implicit/model.hh>
+#include <dumux/porousmediumflow/3p/model.hh>
 #include <dumux/material/fluidsystems/h2oairmesitylene.hh>
 #include <dumux/material/components/h2o.hh>
 #include <dumux/material/fluidmatrixinteractions/3p/thermalconductivitysomerton3p.hh>
diff --git a/test/porousmediumflow/3p/implicit/infiltration3pproblem.hh b/test/porousmediumflow/3p/implicit/infiltration3pproblem.hh
index 18a4f6c27a116724b125ebb068a26ab0fe98da88..c12c6c66d6be66b70b1aee7e5b301d3efe1e2eaf 100644
--- a/test/porousmediumflow/3p/implicit/infiltration3pproblem.hh
+++ b/test/porousmediumflow/3p/implicit/infiltration3pproblem.hh
@@ -29,7 +29,7 @@
 #include <dumux/discretization/box/properties.hh>
 #include <dumux/discretization/methods.hh>
 #include <dumux/porousmediumflow/problem.hh>
-#include <dumux/porousmediumflow/3p/implicit/model.hh>
+#include <dumux/porousmediumflow/3p/model.hh>
 #include <dumux/material/fluidsystems/h2oairmesitylene.hh>
 #include <dumux/linear/seqsolverbackend.hh>