diff --git a/tests/demo/CMakeLists.txt b/tests/demo/CMakeLists.txt
index 2781a99..769a6d3 100644
--- a/tests/demo/CMakeLists.txt
+++ b/tests/demo/CMakeLists.txt
@@ -7,13 +7,12 @@
 # Licence:     3-Clause BSD licence
 #############################################################################
 
-PROJECT(TEDemo)
+project(TEDemo)
 
-CMAKE_MINIMUM_REQUIRED(VERSION 3.12)
-SET(CMAKE_CXX_STANDARD 17)
-SET(CMAKE_CXX_STANDARD_REQUIRED True)
+cmake_minimum_required(VERSION 3.12)
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED True)
 
-SET(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/bin)
-
-ADD_EXECUTABLE(${CMAKE_PROJECT_NAME} tinyexpr.cpp tedemo.cpp)
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/bin)
 
+add_executable(${CMAKE_PROJECT_NAME} ../../tinyexpr.cpp tedemo.cpp)
diff --git a/tests/demo/tedemo.cpp b/tests/demo/tedemo.cpp
index 17b0838..11046b2 100644
--- a/tests/demo/tedemo.cpp
+++ b/tests/demo/tedemo.cpp
@@ -1,14 +1,13 @@
 // This is mostly used as a CMake project used for code analysis.
 
-#include "tinyexpr.h"
+#include "../../tinyexpr.h"
 #include <iostream>
 
-int main(int argc, char *argv[])
+int main(int argc, char* argv[])
     {
     te_parser tep;
-    const char *c = "sqrt(5^2+7^2+11^2+(8-2)^2)";
+    const char* c = "sqrt(5^2+7^2+11^2+(8-2)^2)";
     double r = tep.evaluate(c);
-    std::cout << "The expression:\n\t" <<
-        c << "\nevaluates to:\n\t" << r << "\n";
+    std::cout << "The expression:\n\t" << c << "\nevaluates to:\n\t" << r << "\n";
     return EXIT_SUCCESS;
     }