diff --git a/common.h b/common.h
index 8cd2156..864bcb6 100644
--- a/common.h
+++ b/common.h
@@ -14,6 +14,23 @@ extern bool useFloat;
 
 extern int deviceIndex;
 
+// Exceptions
+struct invaliddevice : public std::exception
+{
+    virtual const char * what () const throw ()
+    {
+        return "Chosen device index is invalid";
+    }
+};
+
+struct badntimes : public std::exception
+{
+    virtual const char * what () const throw ()
+    {
+        return "Chosen number of times is invalid, must be >= 2";
+    }
+};
+
 template < typename T >
 void check_solution(void* a_in, void* b_in, void* c_in)
 {
diff --git a/cuda-stream.cu b/cuda-stream.cu
index 87981ec..9b06efd 100644
--- a/cuda-stream.cu
+++ b/cuda-stream.cu
@@ -11,22 +11,6 @@
 
 std::string getDeviceName(int device);
 
-struct invaliddevice : public std::exception
-{
-    virtual const char * what () const throw ()
-    {
-        return "Chosen device index is invalid";
-    }
-};
-
-struct badntimes : public std::exception
-{
-    virtual const char * what () const throw ()
-    {
-        return "Chosen number of times is invalid, must be >= 2";
-    }
-};
-
 // Code to check CUDA errors
 void check_cuda_error(void)
 {
diff --git a/ocl-stream.cpp b/ocl-stream.cpp
index 5a0b6bc..54c7a5c 100644
--- a/ocl-stream.cpp
+++ b/ocl-stream.cpp
@@ -21,22 +21,6 @@ struct badfile : public std::exception
     }
 };
 
-struct invaliddevice : public std::exception
-{
-    virtual const char * what () const throw ()
-    {
-        return "Chosen device index is invalid";
-    }
-};
-
-struct badntimes : public std::exception
-{
-    virtual const char * what () const throw ()
-    {
-        return "Chosen number of times is invalid, must be >= 2";
-    }
-};
-
 
 // Print error and exit
 void die(std::string msg, cl::Error& e)