diff --git a/src/Make.sh b/src/Make.sh
index f2feb8f101..94c8af8b50 100644
--- a/src/Make.sh
+++ b/src/Make.sh
@@ -4,6 +4,8 @@
 #         sh Make.sh Makefile.list
 
 # function to create one style_*.h file
+# must whack *.d files that depend on style_*.h file,
+# else Make will not recreate them
 
 style () {
   list=`grep -l $1 $2*.h`
@@ -20,9 +22,11 @@ style () {
   elif (test ! -e style_$3.h) then
     mv style_$3.tmp style_$3.h
     rm -f Obj_*/$4.d
+    rm -f Obj_*/lammps.d
   elif (test "`diff --brief style_$3.h style_$3.tmp`" != "") then
     mv style_$3.tmp style_$3.h
     rm -f Obj_*/$4.d
+    rm -f Obj_*/lammps.d
   else
     rm -f style_$3.tmp
   fi