diff --git a/unittests/Solver/ConfigurationFactory.cpp b/unittests/Solver/ConfigurationFactory.cpp
index 5170271fa..2a095ea34 100644
--- a/unittests/Solver/ConfigurationFactory.cpp
+++ b/unittests/Solver/ConfigurationFactory.cpp
@@ -2,6 +2,8 @@
 
 #include "vara/Feature/ConstraintBuilder.h"
 #include "vara/Feature/FeatureModelBuilder.h"
+
+#include "Utils/UnittestHelper.h"
 #include "gtest/gtest.h"
 
 namespace vara::solver {
@@ -51,6 +53,25 @@ TEST(ConfigurationFactory, GetAllConfigurations) {
   EXPECT_EQ(ConfigResult.extractValue().size(), 6 * 63);
 }
 
+TEST(ConfigurationFactory, GetAllConfigurations2) {
+  auto FM = feature::loadFeatureModel(
+      getTestResource("test_three_optional_features.xml"));
+  auto ConfigResult = ConfigurationFactory::getAllConfigs(*FM);
+  EXPECT_TRUE(ConfigResult);
+  auto Configs = ConfigResult.extractValue();
+
+  EXPECT_EQ(Configs.size(), 8);
+
+  auto ConfigsStrings = std::vector<string>();
+  for (auto &config : Configs) {
+    ConfigsStrings.push_back(config.get()->dumpToString());
+  }
+
+  auto UniqueConfigs =
+      std::set<string>(ConfigsStrings.begin(), ConfigsStrings.end());
+  EXPECT_EQ(Configs.size(), UniqueConfigs.size());
+}
+
 TEST(ConfigurationFactory, GetNConfigurations) {
   auto FM = getFeatureModel();
   auto ConfigResult = ConfigurationFactory::getNConfigs(*FM, 100);
diff --git a/unittests/resources/CMakeLists.txt b/unittests/resources/CMakeLists.txt
index a243fcb77..5d47f4336 100644
--- a/unittests/resources/CMakeLists.txt
+++ b/unittests/resources/CMakeLists.txt
@@ -39,6 +39,7 @@ set(FEATURE_LIB_TEST_FILES
     xml/test_output_string.xml
     xml/test_revision_range.xml
     xml/test_step_function.xml
+    xml/test_three_optional_features.xml
     xml/test_with_whitespaces.xml
     yml/dune_configs.yml
 )
diff --git a/unittests/resources/xml/test_three_optional_features.xml b/unittests/resources/xml/test_three_optional_features.xml
new file mode 100644
index 000000000..d18ea984f
--- /dev/null
+++ b/unittests/resources/xml/test_three_optional_features.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE vm SYSTEM "vm.dtd">
+<vm name="SingleLocalSingle" root="root">
+  <binaryOptions>
+    <configurationOption>
+      <name>root</name>
+      <parent></parent>
+      <optional>False</optional>
+    </configurationOption>
+    <configurationOption>
+      <name>A</name>
+      <outputString>A</outputString>
+      <parent>root</parent>
+      <optional>True</optional>
+    </configurationOption>
+    <configurationOption>
+      <name>B</name>
+      <outputString>B</outputString>
+      <parent>root</parent>
+      <optional>True</optional>
+    </configurationOption>
+    <configurationOption>
+      <name>C</name>
+      <outputString>C</outputString>
+      <parent>root</parent>
+      <optional>True</optional>
+    </configurationOption>
+  </binaryOptions>
+</vm>