diff --git a/src/python/composition/meson.build b/src/python/composition/meson.build
index 2449f5b..fce5833 100644
--- a/src/python/composition/meson.build
+++ b/src/python/composition/meson.build
@@ -1,5 +1,6 @@
 # Define the library
 bindings_sources = files('bindings.cpp')
+bindings_headers = files('bindings.h')
 
 dependencies = [
     composition_dep,
@@ -8,9 +9,10 @@ dependencies = [
     pybind11_dep,
 ]
 
-libPYcomposition = shared_module('py_composition',
-                                bindings_sources,
-                                cpp_args: ['-fvisibility=default'],
-                                install : true,
-                                dependencies: dependencies,
-)
+shared_module('py_composition',
+    bindings_sources,
+    cpp_args: ['-fvisibility=default'],
+    install : true,
+    dependencies: dependencies,
+    include_directories: include_directories('.')
+)
\ No newline at end of file
diff --git a/src/python/meson.build b/src/python/meson.build
index 33d6298..be2d427 100644
--- a/src/python/meson.build
+++ b/src/python/meson.build
@@ -1 +1,2 @@
-subdir('composition')
\ No newline at end of file
+subdir('composition')
+subdir('const')
\ No newline at end of file