diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1541682..ba3f718 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,7 +15,7 @@
 cmake_minimum_required (VERSION 3.5.1) # Need >= 3.8 for first-class CUDA support
 
 ## Project settings
-project(astaroth CXX)
+project(astaroth C CXX)
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR})
@@ -64,3 +64,5 @@ add_subdirectory(src/core)
 if (BUILD_STANDALONE)
     add_subdirectory(src/standalone)
 endif ()
+
+add_subdirectory(src/ctest)
diff --git a/ctest/CMakeLists.txt b/ctest/CMakeLists.txt
deleted file mode 100644
index b2c84bf..0000000
--- a/ctest/CMakeLists.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-include_directories(${CMAKE_SOURCE_DIR}/include)
-add_executable(ctest main.c)
-target_link_libraries(ctest astaroth_core)
diff --git a/src/ctest/CMakeLists.txt b/src/ctest/CMakeLists.txt
new file mode 100644
index 0000000..030d744
--- /dev/null
+++ b/src/ctest/CMakeLists.txt
@@ -0,0 +1,2 @@
+add_executable(ctest main.c)
+target_link_libraries(ctest PRIVATE astaroth_core m)
diff --git a/ctest/main.c b/src/ctest/main.c
similarity index 58%
rename from ctest/main.c
rename to src/ctest/main.c
index 5ed5ffc..a718b7d 100644
--- a/ctest/main.c
+++ b/src/ctest/main.c
@@ -7,11 +7,12 @@ int
 main(void)
 {
     AcMeshInfo info = {
-        .int_params[AC_mx] = 128,
-        .int_params[AC_my] = 64,
-        .int_params[AC_mz] = 32,
+        .int_params[AC_nx] = 128,
+        .int_params[AC_ny] = 64,
+        .int_params[AC_nz] = 32,
     };
     acInit(info);
+    acIntegrate(0.1f);
     acQuit();
     return EXIT_SUCCESS;
 }