diff --git a/examples/Calc/CMakeLists.txt b/examples/Calc/CMakeLists.txt
index 14f85f53..fe3d335b 100644
--- a/examples/Calc/CMakeLists.txt
+++ b/examples/Calc/CMakeLists.txt
@@ -1,15 +1,15 @@
 project(Calc)
 
-add_library(Calc STATIC src/Calculator)
+add_library(Calc STATIC src/Calculator.cpp)
 target_include_directories(Calc INTERFACE src)
 
 if(TARGET GTest::GTest)
-    add_executable(GTestCalculatorSteps features/step_definitions/GTestCalculatorSteps)
+    add_executable(GTestCalculatorSteps features/step_definitions/GTestCalculatorSteps.cpp)
     target_link_libraries(GTestCalculatorSteps PRIVATE Calc cucumber-cpp GTest::GTest)
 
     list(FIND CMAKE_CXX_COMPILE_FEATURES cxx_variadic_templates HAS_VARIADIC_TEMPLATES)
     if(HAS_VARIADIC_TEMPLATES GREATER -1)
-        add_executable(FuncArgsCalculatorSteps features/step_definitions/FuncArgsCalculatorSteps)
+        add_executable(FuncArgsCalculatorSteps features/step_definitions/FuncArgsCalculatorSteps.cpp)
         target_link_libraries(FuncArgsCalculatorSteps PRIVATE Calc cucumber-cpp GTest::GTest)
 
         target_compile_features(FuncArgsCalculatorSteps PRIVATE cxx_variadic_templates)
@@ -17,11 +17,11 @@ if(TARGET GTest::GTest)
 endif()
 
 if(TARGET Boost::unit_test_framework)
-    add_executable(BoostCalculatorSteps features/step_definitions/BoostCalculatorSteps)
+    add_executable(BoostCalculatorSteps features/step_definitions/BoostCalculatorSteps.cpp)
     target_link_libraries(BoostCalculatorSteps PRIVATE Calc cucumber-cpp Boost::unit_test_framework)
 endif()
 
 if(TARGET Qt::Test)
-    add_executable(QtTestCalculatorSteps features/step_definitions/QtTestCalculatorSteps)
+    add_executable(QtTestCalculatorSteps features/step_definitions/QtTestCalculatorSteps.cpp)
     target_link_libraries(QtTestCalculatorSteps Calc Qt::Test cucumber-cpp)
 endif()
diff --git a/examples/CalcQt/CMakeLists.txt b/examples/CalcQt/CMakeLists.txt
index 1d306421..52dbe983 100644
--- a/examples/CalcQt/CMakeLists.txt
+++ b/examples/CalcQt/CMakeLists.txt
@@ -16,7 +16,7 @@ if(TARGET Qt::Core AND TARGET Qt::Gui AND TARGET Qt::Widgets AND TARGET Qt::Test
     add_executable(calcqt src/CalcQt.cpp)
     target_link_libraries(calcqt PRIVATE libcalcqt Qt::Widgets)
 
-    add_executable(QtTestCalculatorQtSteps features/step_definitions/QtTestCalculatorQtSteps)
+    add_executable(QtTestCalculatorQtSteps features/step_definitions/QtTestCalculatorQtSteps.cpp)
     target_link_libraries(QtTestCalculatorQtSteps PRIVATE libcalcqt Qt::Test cucumber-cpp)
 
     if(TARGET Boost::unit_test_framework)
@@ -25,7 +25,7 @@ if(TARGET Qt::Core AND TARGET Qt::Gui AND TARGET Qt::Widgets AND TARGET Qt::Test
     endif()
 
     if(TARGET GTest::GTest)
-        add_executable(GTestCalculatorQtSteps features/step_definitions/GTestCalculatorQtSteps)
+        add_executable(GTestCalculatorQtSteps features/step_definitions/GTestCalculatorQtSteps.cpp)
         target_link_libraries(GTestCalculatorQtSteps PRIVATE libcalcqt cucumber-cpp GTest::GTest Qt::Test)
     endif()
 
diff --git a/examples/FeatureShowcase/CMakeLists.txt b/examples/FeatureShowcase/CMakeLists.txt
index 3955de7c..f87e6f47 100644
--- a/examples/FeatureShowcase/CMakeLists.txt
+++ b/examples/FeatureShowcase/CMakeLists.txt
@@ -11,8 +11,8 @@ if(TARGET GTest::GTest)
     endfunction()
 
     add_cucumber_executable(
-        features/step_definitions/TagSteps
-        features/step_definitions/TableSteps
+        features/step_definitions/TagSteps.cpp
+        features/step_definitions/TableSteps.cpp
     )
 endif()