diff --git a/RAJAStream.cpp b/RAJAStream.cpp
index 395a6ee..2d24f2a 100644
--- a/RAJAStream.cpp
+++ b/RAJAStream.cpp
@@ -15,7 +15,7 @@ using RAJA::RangeSegment;
 #endif
 
 template <class T>
-RAJAStream<T>::RAJAStream(const unsigned int ARRAY_SIZE, const int device_index)
+RAJAStream<T>::RAJAStream(const int ARRAY_SIZE, const int device_index)
     : array_size(ARRAY_SIZE)
 {
   RangeSegment seg(0, ARRAY_SIZE);
diff --git a/RAJAStream.hpp b/RAJAStream.hpp
index b5cb586..bfcc70f 100644
--- a/RAJAStream.hpp
+++ b/RAJAStream.hpp
@@ -32,7 +32,7 @@ class RAJAStream : public Stream<T>
 {
   protected:
     // Size of arrays
-    unsigned int array_size;
+    int array_size;
 
     // Contains iteration space
     RAJA::IndexSet index_set;
@@ -44,7 +44,7 @@ class RAJAStream : public Stream<T>
 
   public:
 
-    RAJAStream(const unsigned int, const int);
+    RAJAStream(const int, const int);
     ~RAJAStream();
 
     virtual void copy() override;