diff --git a/DAMASK_env.csh b/DAMASK_env.csh
index 96ddbf8c2..81d4de421 100644
--- a/DAMASK_env.csh
+++ b/DAMASK_env.csh
@@ -25,11 +25,11 @@ endif
 # this seems to make sense for the stack size
 if ( `which free` != "free: Command not found." ) then
   set freeMem=`free -k | grep -E '(Mem|Speicher):' | awk '{print $4;}'`
-  set stack=`expr $freeMem / $DAMASK_NUM_THREADS / 2`
   set heap=` expr $freeMem                       / 2`
+  set stack=`expr $freeMem / $DAMASK_NUM_THREADS / 2`
   # http://superuser.com/questions/220059/what-parameters-has-ulimit             
-  limit stacksize $stack # maximum stack size (kB)
   limit datasize  $heap  # maximum  heap size (kB)
+  limit stacksize $stack # maximum stack size (kB)
 endif
 if ( `limit | grep memoryuse` != "" ) then
   limit memoryuse  unlimited  # maximum physical memory size
diff --git a/DAMASK_env.sh b/DAMASK_env.sh
index 6abaff19b..e45e16d42 100644
--- a/DAMASK_env.sh
+++ b/DAMASK_env.sh
@@ -40,8 +40,8 @@ FREE=$(which free 2>/dev/null)
 if [ "x$FREE" != "x" ]; then
   freeMem=$(free -k | grep -E '(Mem|Speicher):' | awk '{print $4;}')
   # http://superuser.com/questions/220059/what-parameters-has-ulimit             
-  ulimit -s $(expr $freeMem / $DAMASK_NUM_THREADS / 2)  2>/dev/null # maximum stack size (kB)
   ulimit -d $(expr $freeMem                       / 2)  2>/dev/null # maximum  heap size (kB)
+  ulimit -s $(expr $freeMem / $DAMASK_NUM_THREADS / 2)  2>/dev/null # maximum stack size (kB)
 fi
 ulimit -v unlimited   2>/dev/null # maximum virtual memory size
 ulimit -m unlimited   2>/dev/null # maximum physical memory size
diff --git a/DAMASK_env.zsh b/DAMASK_env.zsh
index ccb534b99..557397630 100644
--- a/DAMASK_env.zsh
+++ b/DAMASK_env.zsh
@@ -28,8 +28,8 @@ if [ "`which free 2>/dev/null`" != "free not found" ]; then
   freeMem=`free -k | grep -E '(Mem|Speicher):' | awk '{print $4;}'`
 
   # http://superuser.com/questions/220059/what-parameters-has-ulimit             
+  #ulimit -d `expr $freeMem                       / 2` 2>/dev/null # maximum  heap size (kB)
   ulimit -s `expr $freeMem / $DAMASK_NUM_THREADS / 2` 2>/dev/null # maximum stack size (kB)
-  ulimit -d `expr $freeMem                       / 2` 2>/dev/null # maximum  heap size (kB)
 fi
 ulimit -v unlimited   2>/dev/null # maximum virtual memory size
 ulimit -m unlimited   2>/dev/null # maximum physical memory size