diff --git a/license_sh/commands/run_license_sh.py b/license_sh/commands/run_license_sh.py
index 6850457..491b131 100644
--- a/license_sh/commands/run_license_sh.py
+++ b/license_sh/commands/run_license_sh.py
@@ -1,15 +1,12 @@
 import questionary
-
+import sys
 from . import config_cmd
 from ..config import get_config, whitelist_licenses
 from ..helpers import get_dependency_tree_with_licenses
 from ..project_identifier import ProjectType, get_project_types
 from ..reporters.ConsoleReporter import ConsoleReporter
 from ..reporters.JSONConsoleReporter import JSONConsoleReporter
-from ..runners.maven import MavenRunner
-from ..runners.npm import NpmRunner
-from ..runners.python import PythonRunner
-from ..runners.yarn import YarnRunner
+from ..runners import run_check
 
 try:
     from license_sh_private.licenses import COMMERCIAL_LICENSES as WHITELIST
@@ -45,30 +42,29 @@ def run_license_sh(arguments):
     # docopt guarantees that output variable contains either console or json
     Reporter = {"console": ConsoleReporter, "json": JSONConsoleReporter}[output]
 
-    project_types = get_project_types(path)
     ignored_packages = []
-
-    dep_tree = None
-
-    if ProjectType.PYTHON_PIPENV in project_types:
-        runner = PythonRunner(path, silent, debug)
-        dep_tree, license_map = runner.check()
-        ignored_packages = ignored_packages_map[ProjectType.PYTHON_PIPENV.value]
-
-    if ProjectType.NPM in project_types:
-        runner = NpmRunner(path, silent, debug)
-        dep_tree, license_map = runner.check()
-        ignored_packages = ignored_packages_map[ProjectType.NPM.value]
-
-    if ProjectType.MAVEN in project_types:
-        runner = MavenRunner(path, silent, debug)
-        dep_tree, license_map = runner.check()
-        ignored_packages = ignored_packages_map[ProjectType.MAVEN.value]
-
-    if ProjectType.YARN in project_types:
-        runner = YarnRunner(path, silent, debug)
-        dep_tree, license_map = runner.check()
-        ignored_packages = ignored_packages_map[ProjectType.YARN.value]
+    project_list = [e.value for e in get_project_types(path)]
+
+    if len(project_list) == 0:
+        supported_projects = [e.value for e in ProjectType]
+        print(
+            f"None of currently supported projects found. Supported {supported_projects}",
+            file=sys.stderr,
+        )
+        exit(2)
+
+    if len(project_list) > 1:
+        print(
+            f"Curretly there is no support for multi project/language repositories. Found {project_types}. Only '{project_types[0]}' will be checked.",
+            file=sys.stderr,
+        )
+
+    project_to_check = project_list[0]
+    dep_tree = run_check(project_to_check, path, silent, debug)
+    ignored_packages = ignored_packages_map.get(project_to_check, [])
+    if not dep_tree:
+        print(f"Unexpected issue, couldn't create dependency tree", file=sys.stderr)
+        exit(3)
 
     (
         filtered_dep_tree,
diff --git a/license_sh/runners/__init__.py b/license_sh/runners/__init__.py
index e69de29..9b4f2b4 100644
--- a/license_sh/runners/__init__.py
+++ b/license_sh/runners/__init__.py
@@ -0,0 +1,20 @@
+from ..runners.maven import MavenRunner
+from ..runners.npm import NpmRunner
+from ..runners.python import PythonRunner
+from ..runners.yarn import YarnRunner
+from ..project_identifier import ProjectType
+
+RUNNERS = {
+    ProjectType.PYTHON_PIPENV.value: PythonRunner,
+    ProjectType.YARN.value: YarnRunner,
+    ProjectType.NPM.value: NpmRunner,
+    ProjectType.MAVEN.value: MavenRunner,
+}
+
+
+def run_check(project_to_check: str, path: str, silent: bool, debug: bool):
+    runner = RUNNERS.get(project_to_check)
+    if not runner:
+        return None
+
+    return runner(path, silent, debug).check()
diff --git a/license_sh/runners/maven/__init__.py b/license_sh/runners/maven/__init__.py
index c61906f..4ad6046 100644
--- a/license_sh/runners/maven/__init__.py
+++ b/license_sh/runners/maven/__init__.py
@@ -221,4 +221,4 @@ def check(self):
         for node in PreOrderIter(dep_tree):
             node.license = license_map.get(f"{node.name}@{node.version}", "")
 
-        return dep_tree, license_map
+        return dep_tree
diff --git a/license_sh/runners/npm/__init__.py b/license_sh/runners/npm/__init__.py
index fb1c505..2e1bc40 100644
--- a/license_sh/runners/npm/__init__.py
+++ b/license_sh/runners/npm/__init__.py
@@ -150,4 +150,4 @@ def check(self):
             hasattr(node, "version_request") and delattr(node, "version_request")
             node.license = license_map.get(f"{node.name}@{node.version}", None)
 
-        return dep_tree, license_map
+        return dep_tree
diff --git a/license_sh/runners/python/__init__.py b/license_sh/runners/python/__init__.py
index 3cf5bf8..1191930 100644
--- a/license_sh/runners/python/__init__.py
+++ b/license_sh/runners/python/__init__.py
@@ -105,4 +105,4 @@ def check(self):
         for node in PreOrderIter(root):
             node.license = license_map.get(f"{node.name}@{node.version}", None)
 
-        return root, license_map
+        return root
diff --git a/license_sh/runners/yarn/__init__.py b/license_sh/runners/yarn/__init__.py
index c24bbf7..cc073f2 100644
--- a/license_sh/runners/yarn/__init__.py
+++ b/license_sh/runners/yarn/__init__.py
@@ -346,4 +346,4 @@ def check(self):
             for node in PreOrderIter(dep_tree):
                 node.license = license_map.get(f"{node.name}@{node.version}", None)
 
-        return dep_tree, license_map
+        return dep_tree