diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9a3a26b..85b963d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,13 +1,12 @@
 cmake_minimum_required(VERSION 3.10)
 
 project("GeneticImages"
-        VERSION 0.1
-        DESCRIPTION "Recreate reference images with genetic algorithms"
-        HOMEPAGE_URL "https://labs.phundrak.fr/phundrak/genetic-images"
-        LANGUAGES CXX)
+  VERSION 0.1
+  DESCRIPTION "Recreate reference images with genetic algorithms"
+  HOMEPAGE_URL "https://labs.phundrak.fr/phundrak/genetic-images"
+  LANGUAGES CXX)
 
 file(GLOB SRC_FILES "src/*.cc")
-file(GLOB TEST_FILES "tests/tests.cc")
 
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/cmake")
 
@@ -21,25 +20,32 @@ enable_cxx_compiler_flag_if_supported("-O3")
 enable_cxx_compiler_flag_if_supported("-flto")
 
 # include_directories(<PUBLIC HEADER DIRECTORIES>)
+
+# Main software
 set(TGT genetic-image)
-set(TESTTGT genetic-image-tests)
 add_executable(${TGT} ${SRC_FILES})
-add_executable(${TESTTGT} ${TEST_FILES})
 target_compile_features(${TGT} PRIVATE cxx_std_17)
-target_compile_features(${TESTTGT} PRIVATE cxx_std_17)
 target_include_directories(${TGT} PRIVATE include/genimg)
-target_include_directories(${TESTTGT} PRIVATE include/genimg)
 target_link_libraries(${TGT} ${CONAN_LIBS} stdc++fs)
-target_link_libraries(${TESTTGT} ${CONAN_LIBS} stdc++fs)
+
+# Tests
+if(TESTS)
+  set(TESTTGT genetic-image-tests)
+  file(GLOB TEST_FILES "tests/tests.cc")
+  add_executable(${TESTTGT} ${TEST_FILES})
+  target_compile_features(${TESTTGT} PRIVATE cxx_std_17)
+  target_include_directories(${TESTTGT} PRIVATE include/genimg)
+  target_link_libraries(${TESTTGT} ${CONAN_LIBS} stdc++fs)
+endif()
 
 # OS specific instructions.
 if(APPLE)
 elseif(WIN32)
-    # Windows developer environment specific instructions.
-    if(MINGW)
-    elseif(MSYS)
-    elseif(CYGWIN)
-    endif()
+  # Windows developer environment specific instructions.
+  if(MINGW)
+  elseif(MSYS)
+  elseif(CYGWIN)
+  endif()
 elseif(UNIX)
 else()
 endif()
diff --git a/README.org b/README.org
index b6d0df5..9d2cfaf 100644
--- a/README.org
+++ b/README.org
@@ -73,6 +73,12 @@ following line instead of the second line:
 #+begin_src shell
   conan install .. --build missing --profile <your_profile>
 #+end_src
+If you wish to build the project’s tests in addition to the project itself, you
+can add the option ~-DTESTS=True~ to the first ~cmake~ command to build the
+project’s tests too.
+#+begin_src shell
+  cmake -DCMAKE_CXX_COMPILER=clang++ -DTESTS=True .. -G Ninja
+#+end_src
 
 If you do not wish to build your project with Ninja but with another generator,
 such as Unix Makefiles, simply replace ~Ninja~ in the second to last ~cmake~