diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 000000000..6ac11f8bd
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,37 @@
+# This is a basic workflow to help you get started with Actions
+
+name: CI
+
+# Controls when the action will run. 
+on:
+  # Triggers the workflow on push or pull request events but only for the master branch
+  push:
+    branches: [ master, develop ]
+  pull_request:
+    branches: [ master, develop ]
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  # This workflow contains a single job called "build"
+  build:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - uses: actions/checkout@v2
+
+      - name: Install dependencies
+        run: sudo apt install libexpat1-dev libtolua-dev libncurses5-dev libsqlite3-dev libiniparser-dev libcjson-dev libbsd-dev cppcheck shellcheck luarocks clang-tools
+      - name: Run .travis.yml build script
+        uses: ktomk/run-travis-yml@v1
+        with:
+          file: .travis.yml
+          steps: |
+            install
+            script
+          allow-failure: false
diff --git a/src/spells.c b/src/spells.c
index a6a01513b..5634c5f7e 100644
--- a/src/spells.c
+++ b/src/spells.c
@@ -500,7 +500,10 @@ static const race *select_familiar(const race * magerace, int level, magic_t mag
         return rcfixed;
     }
 
-    assert(magerace->familiars[0]);
+    if (magerace->familiars[0] == NULL) {
+        log_error("a %s magician is trying to summon a familiar", magerace->_name);
+        return NULL;
+    }
     if (rnd >= 100 - (level * 5)) {
         retval = magerace->familiars[magiegebiet];
         assert(retval);
@@ -568,7 +571,7 @@ static int sp_summon_familiar(castorder * co)
     }
     rc = select_familiar(caster->_race, cast_level, caster->faction->magiegebiet);
     if (rc == NULL) {
-        log_error("could not find suitable familiar for %s.\n", caster->faction->race->_name);
+        log_error("could not find suitable familiar for %s.\n", unitname(caster));
         return 0;
     }