1 files changed, 1 insertions, 1 deletions
diff --git a/README.md b/README.md
index 05f23074..99b742d1 100644
--- a/README.md
+++ b/README.md
@@ -68,7 +68,7 @@ Build from command line:
 You can pass the following arguments to CMake:
 
     BUILD_SHARED                  to build with shared type library, otherwise static (default: true)
-    BUILD_DOCUMENTATION           to build the documentation (default: false)
+    BUILD_DOCUMENTATION           to build the documentation, requires Doxygen (default: false)
     BUILD_EXAMPLES                to build the examples (default: true)
     BUILD_TESTS                   to build the unit tests (default: true)
     BUILD_INTERNAL_TESTS          to build the unit tests testing private parts of the API (default: false)