diff --git a/.github/workflows/mpi4py.yaml b/.github/workflows/mpi4py.yaml
new file mode 100644
index 00000000000..f6d145e6bbc
--- /dev/null
+++ b/.github/workflows/mpi4py.yaml
@@ -0,0 +1,91 @@
+name: GitHub Action CI
+
+on:
+    pull_request:
+        # We don't need this to be run on all types of PR behavior
+        # See https://docs.github.com/en/actions/reference/events-that-trigger-workflows#pull_request
+        types:
+          - opened
+          - synchronize
+
+jobs:
+  mpi4py:
+    name: mpi4py sanity checks
+    runs-on: ubuntu-latest
+    steps:
+    - name: Install depencencies
+      run:  sudo apt-get install -y -q
+              libnuma-dev
+
+    - name: Check out the code
+      uses: actions/checkout@v2
+      with:
+        submodules: recursive
+
+    - name: Bootstrap Open MPI
+      run:  ./autogen.pl
+
+    - name: Configure Open MPI
+      run:  ./configure
+              --disable-dependency-tracking
+              --enable-debug
+              --enable-mem-debug
+              --disable-man-pages
+              --disable-mpi-fortran
+              LDFLAGS=-Wl,-rpath,/usr/local/lib
+
+    - name: Build Open MPI
+      run:  make -j 2
+
+    - name: Install Open MPI
+      run:  sudo make install
+
+    - name: Show Open MPI
+      run:  ompi_info
+
+    - name: Show MPICC
+      run:  mpicc -show
+
+    - name: Use Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: 3.9
+        architecture: x64
+
+    - name: Install Python packages
+      run:  python -m pip install --upgrade
+              setuptools pip wheel
+              numpy cffi simplejson PyYAML
+
+    - name: Checkout mpi4py
+      uses: actions/checkout@v2
+      with:
+        repository: mpi4py/mpi4py
+        ref:        master
+        path:       mpi4py
+
+    - name: Install mpi4py
+      run:  python -m pip install ./mpi4py
+      env:
+        CFLAGS: '-O0'
+
+    - name: Test mpi4py (np=1)
+      run:  mpiexec -n 1 python mpi4py/test/runtests.py -e spawn -e dynproc -v
+    - name: Test mpi4py (np=2)
+      run:  mpiexec -n 2 python mpi4py/test/runtests.py -e spawn -e dynproc-v -f
+    - name: Test mpi4py (np=3)
+      run:  mpiexec -n 3 python mpi4py/test/runtests.py -e spawn -e dynproc-v -f
+
+    - name: Test mpi4py.futures (np=1)
+      run:  mpiexec -n 1 python mpi4py/demo/futures/test_futures.py -v
+    - name: Test mpi4py.futures (np=2)
+      run:  mpiexec -n 2 python mpi4py/demo/futures/test_futures.py -v
+    - name: Test mpi4py.futures (np=3)
+      run:  mpiexec -n 3 python mpi4py/demo/futures/test_futures.py -v
+
+    - name: Test mpi4py.futures (np=1)
+      run:  mpiexec -n 1 python -m mpi4py.futures mpi4py/demo/futures/test_futures.py -v
+    - name: Test mpi4py.futures (np=2)
+      run:  mpiexec -n 2 python -m mpi4py.futures mpi4py/demo/futures/test_futures.py -v
+    - name: Test mpi4py.futures (np=3)
+      run:  mpiexec -n 3 python -m mpi4py.futures mpi4py/demo/futures/test_futures.py -v
diff --git a/README.md b/README.md
index 74365c88b7a..845fddea577 100644
--- a/README.md
+++ b/README.md
@@ -33,8 +33,8 @@ Note that there are many, many configuration options to the
 environmnet; see below for desciptions of the options available.
 
 If your installation prefix path is not writable by a regular user,
-you may need to use sudo or su to run the `make install` step.  For
-example:
+you may need to use `sudo` or `su` to run the `make install` step.
+For example:
 
 ```
 $ sudo make install |& tee install.out
diff --git a/ompi/mpi/c/info_get_nthkey.c b/ompi/mpi/c/info_get_nthkey.c
index 0007bf8367f..1d94314a024 100644
--- a/ompi/mpi/c/info_get_nthkey.c
+++ b/ompi/mpi/c/info_get_nthkey.c
@@ -94,7 +94,7 @@ int MPI_Info_get_nthkey(MPI_Info info, int n, char *key)
     err = ompi_info_get_nthkey (info, n, &key_str);
     if (NULL != key_str) {
         opal_string_copy(key, key_str->string, MPI_MAX_INFO_KEY);
-        OBJ_RELEASE(key);
+        OBJ_RELEASE(key_str);
     }
     OMPI_ERRHANDLER_NOHANDLE_RETURN(err, err, FUNC_NAME);
 }