diff --git a/libsharp/sharp.c b/libsharp/sharp.c
index 61572a7..4b995b9 100644
--- a/libsharp/sharp.c
+++ b/libsharp/sharp.c
@@ -26,7 +26,7 @@
  *  Spherical transform library
  *
  *  Copyright (C) 2006-2012 Max-Planck-Society
- *  \author Martin Reinecke
+ *  \author Martin Reinecke \author Dag Sverre Seljebotn
  */
 
 #include <math.h>
diff --git a/libsharp/sharp_internal.h b/libsharp/sharp_internal.h
index 942fa0d..d02d028 100644
--- a/libsharp/sharp_internal.h
+++ b/libsharp/sharp_internal.h
@@ -26,7 +26,7 @@
  *  Internally used functionality for the spherical transform library.
  *
  *  Copyright (C) 2006-2012 Max-Planck-Society
- *  \author Martin Reinecke
+ *  \author Martin Reinecke \author Dag Sverre Seljebotn
  */
 
 #ifndef PLANCK_SHARP_INTERNAL_H
diff --git a/libsharp/sharp_lowlevel.h b/libsharp/sharp_lowlevel.h
index 45c27f0..ebd65d2 100644
--- a/libsharp/sharp_lowlevel.h
+++ b/libsharp/sharp_lowlevel.h
@@ -26,7 +26,7 @@
  *  Low-level, portable interface for the spherical transform library.
  *
  *  Copyright (C) 2012 Max-Planck-Society
- *  \author Martin Reinecke
+ *  \author Martin Reinecke \author Dag Sverre Seljebotn
  */
 
 #ifndef PLANCK_SHARP_LOWLEVEL_H
diff --git a/libsharp/sharp_mpi.c b/libsharp/sharp_mpi.c
index fb75153..3a1765d 100644
--- a/libsharp/sharp_mpi.c
+++ b/libsharp/sharp_mpi.c
@@ -26,7 +26,7 @@
  *  Functionality only needed for MPI-parallel transforms
  *
  *  Copyright (C) 2012 Max-Planck-Society
- *  \author Martin Reinecke
+ *  \author Martin Reinecke \author Dag Sverre Seljebotn
  */
 
 #ifdef USE_MPI
diff --git a/libsharp/sharp_mpi.h b/libsharp/sharp_mpi.h
index 18ac073..03c130d 100644
--- a/libsharp/sharp_mpi.h
+++ b/libsharp/sharp_mpi.h
@@ -26,7 +26,7 @@
  *  Interface for the spherical transform library with MPI support.
  *
  *  Copyright (C) 2011,2012 Max-Planck-Society
- *  \author Martin Reinecke
+ *  \author Martin Reinecke \author Dag Sverre Seljebotn
  */
 
 #ifndef PLANCK_SHARP_MPI_H