diff --git a/cmake/Options.cmake b/cmake/Options.cmake
--- a/cmake/Options.cmake
+++ b/cmake/Options.cmake
@@ -5,36 +5,36 @@ include(GNUInstallDirs)
 # set_directory_options()
 #
 function(set_directory_options)
-    if (APPLE)
+    if(APPLE)
         set(DEFAULT_PERSONAL_DIR "Documents/OpenTTD")
         set(DEFAULT_SHARED_DIR "/Library/Application Support/OpenTTD")
         set(DEFAULT_GLOBAL_DIR "(not set)")
-    elseif (WIN32)
+    elseif(WIN32)
         set(DEFAULT_PERSONAL_DIR "OpenTTD")
         set(DEFAULT_SHARED_DIR "(not set)")
         set(DEFAULT_GLOBAL_DIR "(not set)")
-    elseif (UNIX)
+    elseif(UNIX)
         set(DEFAULT_PERSONAL_DIR ".${BINARY_NAME}")
         set(DEFAULT_SHARED_DIR "(not set)")
         set(DEFAULT_GLOBAL_DIR "${CMAKE_INSTALL_FULL_DATADIR}/${BINARY_NAME}")
-    else ()
+    else()
         message(FATAL_ERROR "Unknown OS found; please consider creating a Pull Request to add support for this OS.")
-    endif ()
+    endif()
 
-    if (NOT PERSONAL_DIR)
+    if(NOT PERSONAL_DIR)
         set(PERSONAL_DIR "${DEFAULT_PERSONAL_DIR}" CACHE STRING "Personal directory")
         message(STATUS "Detecting Personal Data directory - ${PERSONAL_DIR}")
-    endif (NOT PERSONAL_DIR)
+    endif()
 
-    if (NOT SHARED_DIR)
+    if(NOT SHARED_DIR)
         set(SHARED_DIR "${DEFAULT_SHARED_DIR}" CACHE STRING "Shared directory")
         message(STATUS "Detecting Shared Data directory - ${SHARED_DIR}")
-    endif (NOT SHARED_DIR)
+    endif()
 
-    if (NOT GLOBAL_DIR)
+    if(NOT GLOBAL_DIR)
         set(GLOBAL_DIR "${DEFAULT_GLOBAL_DIR}" CACHE STRING "Global directory")
         message(STATUS "Detecting Global Data directory - ${GLOBAL_DIR}")
-    endif (NOT GLOBAL_DIR)
+    endif()
 endfunction()
 
 # Set some generic options that influence what is being build.
@@ -42,11 +42,11 @@ endfunction()
 # set_options()
 #
 function(set_options)
-    if (UNIX AND NOT APPLE)
+    if(UNIX AND NOT APPLE)
         set(DEFAULT_OPTION_INSTALL_FHS ON)
-    else (UNIX AND NOT APPLE)
+    else()
         set(DEFAULT_OPTION_INSTALL_FHS OFF)
-    endif (UNIX AND NOT APPLE)
+    endif()
 
     option(OPTION_FORCE_COLORED_OUTPUT "Always produce ANSI-colored output (GNU/Clang only)." OFF)
 
@@ -74,17 +74,17 @@ endfunction()
 # add_definitions_based_on_options()
 #
 function(add_definitions_based_on_options)
-    if (OPTION_DEDICATED)
+    if(OPTION_DEDICATED)
         add_definitions(-DDEDICATED)
-    endif (OPTION_DEDICATED)
+    endif()
 
-    if (NOT OPTION_USE_THREADS)
+    if(NOT OPTION_USE_THREADS)
         add_definitions(-DNO_THREADS)
-    endif (NOT OPTION_USE_THREADS)
+    endif()
 
-    if (OPTION_USE_ASSERTS)
+    if(OPTION_USE_ASSERTS)
         add_definitions(-DWITH_ASSERT)
-    else (OPTION_USE_ASSERTS)
+    else()
         add_definitions(-DNDEBUG)
-    endif (OPTION_USE_ASSERTS)
+    endif()
 endfunction()