diff --git a/src/binary_c_structures.h b/src/binary_c_structures.h
index 5a4552cf5b3060ddc95431393d1a2e196bf84f04..4451b4fedb1caf7a8628ff8526fd57c9f6a1ae16 100644
--- a/src/binary_c_structures.h
+++ b/src/binary_c_structures.h
@@ -1361,6 +1361,7 @@ struct star_t {
     
     double spiky_luminosity; // L modulated by pulse rise/fall
     double prev_tagb;
+    double dmacc; /* mass of accreted layer */
 #ifdef NUCSYN
     /* Nucleosynthesis stuff */
     /* stuff you might want to log */
@@ -1382,7 +1383,6 @@ struct star_t {
     double mixdepth,mixtime;
     double dmmix; /* mass of mixed region at the stellar surface */
     double conv_base; /* mass coord of surface convection zone (on MS) */
-    double dmacc; /* mass of accreted layer */
     double dm_companion_SN; /* mass change caused by companion supernova */
 
     double max_mix_depth;