diff --git a/applysed b/applysed
index 643cd7f..573ee91 100755
--- a/applysed
+++ b/applysed
@@ -20,7 +20,7 @@
 # ths-applysed.sh - apply a sed script to the whole project (the sed commands 
 # have to be supplied in an external file).
 
-source `dirname $0`/ths-variables
+source "`dirname $0`/ths-variables"
 
 function usage() {
 	echo "Usage: `basename $0` <file-with-replacement-list> <base-directory>"
diff --git a/autotranslate b/autotranslate
index 2b101a6..5311d2a 100755
--- a/autotranslate
+++ b/autotranslate
@@ -18,7 +18,7 @@
 # 
 # ths-autotranslate.sh - automatically translates project files (may initialize files that have not been started to translate) using a specified compendium.
 
-source `dirname $0`/ths-variables
+source "`dirname $0`/ths-variables"
 
 if [ ! $MSGINIT ]; then
 	echo -e $RED"This program needs the msginit utility."$ENDCOLOR
diff --git a/checkout b/checkout
index 607c301..b10ba2e 100755
--- a/checkout
+++ b/checkout
@@ -14,7 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-source `dirname $0`/ths-variables
+source "`dirname $0`/ths-variables"
 
 if [ ! -f $THS ]; then
     echo "Please enter your language code (Default: lt):"
diff --git a/init-po-files b/init-po-files
index 3e1fafd..223d5ea 100755
--- a/init-po-files
+++ b/init-po-files
@@ -14,8 +14,8 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-source `dirname $0`/ths-variables
-source $THS
+source "`dirname $0`/ths-variables"
+source "$THS"
 
 if [ "$1" = "--help" ] || [ "$1" = "-h" ]; then
     echo "Usage `basename $0` <messages-tree> <pot-tree>"
diff --git a/pack-po-files b/pack-po-files
index 42fcb6c..5b648bf 100755
--- a/pack-po-files
+++ b/pack-po-files
@@ -14,8 +14,8 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-source `dirname $0`/ths-variables
-source $THS
+source "`dirname $0`/ths-variables"
+source "$THS"
 
 tar cfvj trunk.tar.bz2 `svn status $potrunk | awk '{print $2}'`
 tar cfvj stable.tar.bz2 `svn status $postable | awk '{print $2}'`
diff --git a/pocompare b/pocompare
index 0acdb3a..0ca7e34 100755
--- a/pocompare
+++ b/pocompare
@@ -19,7 +19,7 @@
 # ths-pocompare.sh - compare two translation files using diff, unwrapps first 
 # for best comparison.
 
-source `dirname $0`/ths-variables
+source "`dirname $0`/ths-variables"
 
 if [ ! $MSGMERGE ]; then
 	echo -e $RED"This program needs the msgmerge utility."$ENDCOLOR
diff --git a/pocompare-kdiff3 b/pocompare-kdiff3
index a1f1820..38ef8db 100755
--- a/pocompare-kdiff3
+++ b/pocompare-kdiff3
@@ -19,7 +19,7 @@
 # ths-pocompare-kdiff3.sh - compare two translation files using kdiff3, 
 # unwrapps first for best comparison.
 
-source `dirname $0`/ths-variables
+source "`dirname $0`/ths-variables"
 
 if [ ! $MSGMERGE ]; then
 	echo -e $RED"This program needs the msgmerge utility."$ENDCOLOR
diff --git a/potopot b/potopot
index ea1ec21..409f6d7 100755
--- a/potopot
+++ b/potopot
@@ -19,7 +19,7 @@
 # ths-potopot.sh - converts po files to pot (template) files (basically 
 # strips all the translation).
 
-source `dirname $0`/ths-variables
+source "`dirname $0`/ths-variables"
 
 if [ ! $MSGMERGE ]; then
 	echo -e $RED"This program needs the msgmerge utility."$ENDCOLOR
diff --git a/poupdate b/poupdate
index a0b5ea2..c7b4b38 100755
--- a/poupdate
+++ b/poupdate
@@ -22,7 +22,7 @@
 
 ## First - the necessary checks before going into the loop
 
-source `dirname $0`/ths-variables
+source "`dirname $0`/ths-variables"
 
 if [ ! $MSGMERGE ]; then
 	echo -e $RED"This program needs the msgmerge utility."$ENDCOLOR
diff --git a/stripfuzzy b/stripfuzzy
index 9417172..9cdc3a1 100755
--- a/stripfuzzy
+++ b/stripfuzzy
@@ -18,7 +18,7 @@
 # 
 # ths-stripfuzzy.sh - makes all fuzzy strings non-fuzzy in a translation project.
 
-source `dirname $0`/ths-variables
+source "`dirname $0`/ths-variables"
 
 if [ ! $MSGMERGE ]; then
 	echo -e $RED"This program needs the msgmerge utility."$ENDCOLOR