diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7f0ce80a..0dd72aca 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,7 +18,9 @@ set(UML_HEADERS_DIR ${PROJECT_SOURCE_DIR}/src/uml)
 option(LLVM_CONFIG_PATH "Path to custom llvm-config executable")
 
 if(LLVM_CONFIG_PATH)
+    message(STATUS "Using llvm-config from ${LLVM_CONFIG_PATH}")
     set(LIBCLANG_LLVM_CONFIG_EXECUTABLE ${LLVM_CONFIG_PATH})
+    set(LLVM_CONFIG_BINARY ${LLVM_CONFIG_PATH})
 endif(LLVM_CONFIG_PATH)
 
 message(STATUS "Checking for fmt...")
diff --git a/README.md b/README.md
index 795c3283..d85fb2e1 100644
--- a/README.md
+++ b/README.md
@@ -52,6 +52,10 @@ release/clang-uml --help
 # To build using a specific installed version of LLVM use:
 LLVM_CONFIG_PATH=/usr/bin/llvm-config-13 make release
 
+# To build on macos, it is necessary to provide also path to LLVM cmake directory, e.g.:
+export LLVM_PREFIX="/usr/local/Cellar/llvm@12/12.0.1_1"
+LLVM_CONFIG_PATH="${LLVM_PREFIX}/bin/llvm-config" CMAKE_PREFIX_PATH="${LLVM_PREFIX}/lib/cmake/llvm/" make test
+
 # Optionally
 make install
 # or
diff --git a/src/common/model/package.h b/src/common/model/package.h
index 46325c79..8202b4c2 100644
--- a/src/common/model/package.h
+++ b/src/common/model/package.h
@@ -40,7 +40,7 @@ public:
     package(const package &) = delete;
     package(package &&) = default;
     package &operator=(const package &) = delete;
-    package &operator=(package &&) = default;
+    package &operator=(package &&) = delete;
 
     std::string full_name(bool relative) const override;