diff --git a/bin/installexternal.sh b/bin/installexternal.sh
index 8accbb6b62fed04439bca5fd6bbb4c11b3fcf730..561da744c26850b8dd5f1ad38a3090988afbf21c 100755
--- a/bin/installexternal.sh
+++ b/bin/installexternal.sh
@@ -291,21 +291,16 @@ installOPM()
         git clone -b release/2018.04 https://github.com/OPM/opm-common
     fi
 
-    if [ ! -e opm-material ]; then
-        git clone -b release/2018.04 https://github.com/OPM/opm-material
-    fi
-
     if [ ! -e opm-grid ]; then
         git clone -b release/2018.04 https://github.com/OPM/opm-grid
     fi
-    
+
     if  test "$DOWNLOAD_ONLY" == "y"; then
         return
     fi
 
     if  test "$CLEANUP" == "y"; then
         rm -rf opm-common
-        rm -rf opm-material
         rm -rf opm-grid
         return
     fi
diff --git a/patches/opm-grid-2018.04.patch b/patches/opm-grid-2018.04.patch
index a53bc518be74a6eae035badc659bb08d52364833..8b6c34f4b51622a3541a9b4f4871fddfa5cab36e 100644
--- a/patches/opm-grid-2018.04.patch
+++ b/patches/opm-grid-2018.04.patch
@@ -1,25 +1,3 @@
-diff --git a/dune.module b/dune.module
-index 9c81972..a711c48 100644
---- a/dune.module
-+++ b/dune.module
-@@ -10,5 +10,5 @@ Label: 2018.04
- Maintainer: atgeirr@sintef.no
- MaintainerName: Atgeirr F. Rasmussen
- Url: http://opm-project.org
--Depends: dune-common (>= 2.4) dune-geometry (>= 2.4) dune-grid (>= 2.4)
--Suggests: dune-istl (>= 2.4) opm-common
-+Depends: opm-common dune-common (>= 2.4) dune-geometry (>= 2.4) dune-grid (>= 2.4)
-+Suggests: dune-istl (>= 2.4)
-diff --git a/opm-grid-prereqs.cmake b/opm-grid-prereqs.cmake
-index 2ad0d86..032ac19 100644
---- a/opm-grid-prereqs.cmake
-+++ b/opm-grid-prereqs.cmake
-@@ -34,4 +34,5 @@ set (opm-grid_DEPS
-   "ecl REQUIRED"
-   )
- 
-+include(OpmPackage)
- find_package_deps(opm-grid)
 diff --git a/opm/grid/common/p2pcommunicator.hh b/opm/grid/common/p2pcommunicator.hh
 index 1b4b327..55a2b2f 100644
 --- a/opm/grid/common/p2pcommunicator.hh