diff --git a/extent.cpp b/extent.cpp
index fe984b5a..a896fe0f 100644
--- a/extent.cpp
+++ b/extent.cpp
@@ -72,8 +72,14 @@ namespace util {
     void
     extent<unsigned int>::sanity (void) const
         { return; }
+
+    template <>
+    void
+    extent<unsigned long>::sanity (void) const
+        { return; }
 }
 
 template struct extent<unsigned int>;
+template struct extent<unsigned long>;
 template struct extent<double>;
 
diff --git a/region.cpp b/region.cpp
index 61a0f125..e3f33d32 100644
--- a/region.cpp
+++ b/region.cpp
@@ -131,6 +131,11 @@ namespace util {
     template <>
     void region<unsigned int>::sanity (void) const
         { return; }
+
+
+    template <>
+    void region<unsigned long>::sanity (void) const
+        { return; }
 }
 
 
@@ -143,6 +148,7 @@ operator<< (std::ostream &os, const region<T> &rhs) {
 
 
 template struct region<unsigned int>;
+template struct region<unsigned long>;
 template struct region<double>;
 
 template std::ostream& operator<< (std::ostream&, const region<unsigned int>&);