diff --git a/src/USER-CGDNA/bond_oxdna_fene.cpp b/src/USER-CGDNA/bond_oxdna_fene.cpp
index 64fbe4cf7c387c6e30c69d725f020a6fb223313e..c4d82fda541eb498f00336c35182a2580319292e 100644
--- a/src/USER-CGDNA/bond_oxdna_fene.cpp
+++ b/src/USER-CGDNA/bond_oxdna_fene.cpp
@@ -14,8 +14,8 @@
    Contributing author: Oliver Henrich (EPCC, University of Edinburgh)
 ------------------------------------------------------------------------- */
 
-#include "math.h"
-#include "stdlib.h"
+#include <math.h>
+#include <stdlib.h>
 #include "bond_oxdna_fene.h"
 #include "atom.h"
 #include "neighbor.h"
diff --git a/src/USER-CGDNA/bond_oxdna_fene.h b/src/USER-CGDNA/bond_oxdna_fene.h
index 6d61f4452af57d83fd1eb490fe90361e078c8f0b..0746d1a1bcbb7f10d492303ea7a7bb45614a8df7 100644
--- a/src/USER-CGDNA/bond_oxdna_fene.h
+++ b/src/USER-CGDNA/bond_oxdna_fene.h
@@ -23,7 +23,6 @@ BondStyle(oxdna_fene,BondOxdnaFene)
 #ifndef LMP_BOND_OXDNA_FENE_H
 #define LMP_BOND_OXDNA_FENE_H
 
-#include "stdio.h"
 #include "bond.h"
 
 namespace LAMMPS_NS {
diff --git a/src/USER-CGDNA/fix_nve_dotc_langevin.cpp b/src/USER-CGDNA/fix_nve_dotc_langevin.cpp
index b26132950f91998bdaec271f7dc14640a65c4433..e7ecd7715c81de4a2b71d7dec919d126af7c23b3 100644
--- a/src/USER-CGDNA/fix_nve_dotc_langevin.cpp
+++ b/src/USER-CGDNA/fix_nve_dotc_langevin.cpp
@@ -97,7 +97,7 @@ void FixNVEDotcLangevin::init()
   for (int i = 0; i < nlocal; i++)
     if (mask[i] & groupbit)
       if (ellipsoid[i] < 0)
-	error->one(FLERR,"Fix nve/dotc/langevin requires extended particles");
+        error->one(FLERR,"Fix nve/dotc/langevin requires extended particles");
   
 
   // set prefactor
diff --git a/src/USER-CGDNA/pair_oxdna_coaxstk.cpp b/src/USER-CGDNA/pair_oxdna_coaxstk.cpp
index 43cbe82b86828b13b7a9fc0fa7beabe834030598..b595dd63fc7b395872d0414d98c116c7a3bfb929 100644
--- a/src/USER-CGDNA/pair_oxdna_coaxstk.cpp
+++ b/src/USER-CGDNA/pair_oxdna_coaxstk.cpp
@@ -14,10 +14,10 @@
    Contributing author: Oliver Henrich (EPCC, University of Edinburgh)
 ------------------------------------------------------------------------- */
 
-#include "math.h"
-#include "stdio.h"
-#include "stdlib.h"
-#include "string.h"
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 #include "pair_oxdna_coaxstk.h"
 #include "mf_oxdna.h"
 #include "atom.h"
diff --git a/src/USER-CGDNA/pair_oxdna_excv.cpp b/src/USER-CGDNA/pair_oxdna_excv.cpp
index 74e93b588699f3364a7423ca4107944ba2ba1f28..7cbfd05ffd3f86625a218fecd366d8c17035449a 100644
--- a/src/USER-CGDNA/pair_oxdna_excv.cpp
+++ b/src/USER-CGDNA/pair_oxdna_excv.cpp
@@ -14,10 +14,10 @@
    Contributing author: Oliver Henrich (EPCC, University of Edinburgh)
 ------------------------------------------------------------------------- */
 
-#include "math.h"
-#include "stdio.h"
-#include "stdlib.h"
-#include "string.h"
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 #include "pair_oxdna_excv.h"
 #include "mf_oxdna.h"
 #include "atom.h"
diff --git a/src/USER-CGDNA/pair_oxdna_hbond.cpp b/src/USER-CGDNA/pair_oxdna_hbond.cpp
index 3bf6eb37d4ac2425864404db4e4a27cf937c44ad..2bfdb7775871f75b9c2572cba2296b9014138941 100644
--- a/src/USER-CGDNA/pair_oxdna_hbond.cpp
+++ b/src/USER-CGDNA/pair_oxdna_hbond.cpp
@@ -14,10 +14,10 @@
    Contributing author: Oliver Henrich (EPCC, University of Edinburgh)
 ------------------------------------------------------------------------- */
 
-#include "math.h"
-#include "stdio.h"
-#include "stdlib.h"
-#include "string.h"
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 #include "pair_oxdna_hbond.h"
 #include "mf_oxdna.h"
 #include "atom.h"
diff --git a/src/USER-CGDNA/pair_oxdna_stk.cpp b/src/USER-CGDNA/pair_oxdna_stk.cpp
index f4867ec510dd772e2876bb6cbba4e1abffb75571..83b201cff936e02d241fddd08e29dbbbd08966a2 100644
--- a/src/USER-CGDNA/pair_oxdna_stk.cpp
+++ b/src/USER-CGDNA/pair_oxdna_stk.cpp
@@ -14,10 +14,10 @@
    Contributing author: Oliver Henrich (EPCC, University of Edinburgh)
 ------------------------------------------------------------------------- */
 
-#include "math.h"
-#include "stdio.h"
-#include "stdlib.h"
-#include "string.h"
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 #include "pair_oxdna_stk.h"
 #include "mf_oxdna.h"
 #include "atom.h"
diff --git a/src/USER-CGDNA/pair_oxdna_xstk.cpp b/src/USER-CGDNA/pair_oxdna_xstk.cpp
index 4b8c844346b563755b4f6edc8ab6405750e9ada5..e6bd3cbc80b90f0055a2b5d35d03cb02cfe0973c 100644
--- a/src/USER-CGDNA/pair_oxdna_xstk.cpp
+++ b/src/USER-CGDNA/pair_oxdna_xstk.cpp
@@ -14,10 +14,10 @@
    Contributing author: Oliver Henrich (EPCC, University of Edinburgh)
 ------------------------------------------------------------------------- */
 
-#include "math.h"
-#include "stdio.h"
-#include "stdlib.h"
-#include "string.h"
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 #include "pair_oxdna_xstk.h"
 #include "mf_oxdna.h"
 #include "atom.h"