diff --git a/src/composition/meson.build b/src/composition/meson.build
index d97cbec..a822e52 100644
--- a/src/composition/meson.build
+++ b/src/composition/meson.build
@@ -10,7 +10,8 @@ composition_headers = files(
 dependencies = [
     probe_dep,
     quill_dep,
-    species_weight_dep
+    species_weight_dep,
+    const_dep,
 ]
 
 # Define the libcomposition library so it can be linked against by other parts of the build system
diff --git a/tests/composition/compositionTest.cpp b/tests/composition/compositionTest.cpp
index 17f050a..c9dfd48 100644
--- a/tests/composition/compositionTest.cpp
+++ b/tests/composition/compositionTest.cpp
@@ -4,6 +4,7 @@
 #include <algorithm>
 
 #include "atomicSpecies.h"
+#include "species.h"
 #include "composition.h"
 #include "config.h"