diff --git a/lib/cli/apisetuputility.cpp b/lib/cli/apisetuputility.cpp
index a78409212..8a2f7d62f 100644
--- a/lib/cli/apisetuputility.cpp
+++ b/lib/cli/apisetuputility.cpp
@@ -207,6 +207,15 @@ bool ApiSetupUtility::SetupMasterApiUser()
 
 bool ApiSetupUtility::SetupMasterEnableApi()
 {
+	/*
+	* Ensure the api-users.conf file is included, when conf.d inclusion is disabled.
+	*/
+	if (!NodeUtility::GetConfigurationIncludeState("\"conf.d\"", true))
+		NodeUtility::UpdateConfiguration("\"conf.d/api-users.conf\"", true, false);
+
+	/*
+	* Enable the API feature
+	*/
 	Log(LogInformation, "cli", "Enabling the 'api' feature.");
 
 	FeatureUtility::EnableFeatures({ "api" });
diff --git a/lib/cli/nodeutility.cpp b/lib/cli/nodeutility.cpp
index 235e24200..3f0aead7c 100644
--- a/lib/cli/nodeutility.cpp
+++ b/lib/cli/nodeutility.cpp
@@ -265,6 +265,49 @@ void NodeUtility::SerializeObject(std::ostream& fp, const Dictionary::Ptr& objec
 	fp << "}\n\n";
 }
 
+/*
+* Returns true if the include is found, otherwise false
+*/
+bool NodeUtility::GetConfigurationIncludeState(const String& value, bool recursive) {
+	String configurationFile = Configuration::ConfigDir + "/icinga2.conf";
+
+	Log(LogInformation, "cli")
+		<< "Reading '" << configurationFile << "'.";
+
+	std::ifstream ifp(configurationFile.CStr());
+
+	String affectedInclude = value;
+
+	if (recursive)
+		affectedInclude = "include_recursive " + affectedInclude;
+	else
+		affectedInclude = "include " + affectedInclude;
+
+	bool isIncluded = false;
+
+	std::string line;
+
+	while(std::getline(ifp, line)) {
+		/*
+		* Trying to find if the inclusion is enabled.
+		* First hit breaks out of the loop.
+		*/
+
+		if (line.compare(0, affectedInclude.GetLength(), affectedInclude) == 0) {
+			isIncluded = true;
+
+			/*
+			* We can safely break out here, since an enabled include always win.
+			*/
+			break;
+		}
+	}
+
+	ifp.close();
+
+	return isIncluded;
+}
+
 /*
  * include = false, will comment out the include statement
  * include = true, will add an include statement or uncomment a statement if one is existing
diff --git a/lib/cli/nodeutility.hpp b/lib/cli/nodeutility.hpp
index 57948bfa0..60d1b8217 100644
--- a/lib/cli/nodeutility.hpp
+++ b/lib/cli/nodeutility.hpp
@@ -44,6 +44,7 @@ public:
 
 	static bool WriteNodeConfigObjects(const String& filename, const Array::Ptr& objects);
 
+	static bool GetConfigurationIncludeState(const String& value, bool recursive);
 	static bool UpdateConfiguration(const String& value, bool include, bool recursive);
 	static void UpdateConstant(const String& name, const String& value);