diff --git a/sit b/sit
index 0add6cf..85fd0cd 100755
--- a/sit
+++ b/sit
@@ -102,7 +102,7 @@ fi
 if [ "$COMPILER" == "system" ] ; then
     echo "Using system default compiler"
     COMPILER="" # prevent any compiler specs in the prefix
-else 
+else
     case $PLATFORM in
         hazelhen)
             module swap $(module list -l 2>&1 | awk '/^PrgEnv-/{print $1}') PrgEnv-${COMPILER}
@@ -134,7 +134,7 @@ if [ ! -z "${COMPILER}" ] ; then
     COMPILER_VERSION=$(eval "$COMPILER_VERSION_CMD")
 fi
 # make the compiler variables CC, CXX, FC and F77 available
-if [ ! -z "$COMPILER_OPTS" ] ; then  
+if [ ! -z "$COMPILER_OPTS" ] ; then
     echo "Compiler env: ${COMPILER_OPTS}"
     export ${COMPILER_OPTS}
 fi
@@ -142,7 +142,7 @@ if [ ! -z $COMPILER ] ; then
     echo "Using compiler: $COMPILER version: $COMPILER_VERSION"
 fi
 
-if [ ! -z "$MPI" ] ; then 
+if [ ! -z "$MPI" ] ; then
     MPI_MODULE="mpi/$MPI"
     if [ ! -z "$MPI_VERSION" ] ; then
         MPI_VERSION_NUM=${MPI_VERSION%%-*}
@@ -154,7 +154,7 @@ if [ ! -z "$MPI" ] ; then
                 MPI_MODULE=${MPI_MODULE}${MPI_VERSION_NUM:+"/${MPI_VERSION_NUM}-$COMPILER-$COMPILER_VERSION"}
                 ;;
         esac
-    fi  
+    fi
     echo "Loading MPI module ${MPI_MODULE}"
     module load $MPI_MODULE
 
@@ -211,8 +211,8 @@ BUILDDIR=${WORKDIR}/build
 LOGDIR=${WORKDIR}
 
 
-# source the package class file a second time, so we can modify variables 
-# using their default values. (Defaults depend on other vairables in 
+# source the package class file a second time, so we can modify variables
+# using their default values. (Defaults depend on other vairables in
 # the class file like CATEGORY or PACKAGE)
 source $SCLASS_DIR/$sit_classfile