diff --git a/src/backend/commitrange.h b/src/backend/commitrange.h
index 43b1f88..a5b24d9 100644
--- a/src/backend/commitrange.h
+++ b/src/backend/commitrange.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include "../ds/ptrwrap.h"
+#include "../pal/pal_consts.h"
 
 namespace snmalloc
 {
@@ -43,4 +44,4 @@ namespace snmalloc
       parent->dealloc_range(base, size);
     }
   };
-} // namespace snmalloc
\ No newline at end of file
+} // namespace snmalloc
diff --git a/src/backend/empty_range.h b/src/backend/empty_range.h
index 36680f3..5287cd6 100644
--- a/src/backend/empty_range.h
+++ b/src/backend/empty_range.h
@@ -1,3 +1,4 @@
+#pragma once
 #include "../ds/ptrwrap.h"
 
 namespace snmalloc
@@ -28,4 +29,4 @@ namespace snmalloc
       return nullptr;
     }
   };
-} // namespace snmalloc
\ No newline at end of file
+} // namespace snmalloc
diff --git a/src/snmalloc_core.h b/src/snmalloc_core.h
index 7ae0a33..5cd224f 100644
--- a/src/snmalloc_core.h
+++ b/src/snmalloc_core.h
@@ -1,5 +1,15 @@
 #pragma once
 
+#include "backend/commitrange.h"
 #include "backend/commonconfig.h"
+#include "backend/empty_range.h"
+#include "backend/globalrange.h"
+#include "backend/largebuddyrange.h"
 #include "backend/pagemap.h"
+#include "backend/pagemapregisterrange.h"
+#include "backend/palrange.h"
+#include "backend/range_helpers.h"
+#include "backend/smallbuddyrange.h"
+#include "backend/statsrange.h"
+#include "backend/subrange.h"
 #include "mem/globalalloc.h"