docs: fix cmake flags
diff --git a/README.md b/README.md
index d628117..7c30e35 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,6 @@
 cd build
 cmake ..
 cmake --build . -- all
-
 ```
 
 Generating a test coverage report (requires lcov[^1]; result in `build/lcov/index.html`):
@@ -43,10 +42,12 @@
 rm -rf build
 mkdir build
 cd build
-cmake .. -Dcoveralls_send=ON
+cmake .. -DCN_CBOR_COVERALLS_SEND=ON
 cmake --build . -- all coveralls coverage_report
 ```
 
+[^1]: Installation with homebrew: `brew install lcov`
+
 ## Consuming
 
 ### With cmake
@@ -69,8 +70,6 @@
 
 This package is available in the [conan center](https://conan.io/center/cn-cbor/1.0.0)
 
-add `cn-cbor/1.0.0` to you conan file
+add `cn-cbor/[>=1.0.0]` to you conan file
 
 License: MIT
-
-[^1]: Installation with homebrew: `brew install lcov`