diff --git a/tests/test-bookmarks-rebase b/tests/test-bookmarks-rebase
--- a/tests/test-bookmarks-rebase
+++ b/tests/test-bookmarks-rebase
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-source $TESTDIR/helpers.sh
+. $TESTDIR/helpers.sh
 
 echo "[extensions]" >> $HGRCPATH
 echo "rebase=" >> $HGRCPATH
diff --git a/tests/test-bookmarks-strip b/tests/test-bookmarks-strip
--- a/tests/test-bookmarks-strip
+++ b/tests/test-bookmarks-strip
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-source $TESTDIR/helpers.sh
+. $TESTDIR/helpers.sh
 echo "[extensions]" >> $HGRCPATH
 echo "bookmarks=" >> $HGRCPATH
 echo "mq=" >> $HGRCPATH
diff --git a/tests/test-mq b/tests/test-mq
--- a/tests/test-mq
+++ b/tests/test-mq
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-source $TESTDIR/helpers.sh
+. $TESTDIR/helpers.sh
 
 checkundo()
 {
diff --git a/tests/test-mq-strip b/tests/test-mq-strip
--- a/tests/test-mq-strip
+++ b/tests/test-mq-strip
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-source $TESTDIR/helpers.sh
+. $TESTDIR/helpers.sh
 
 echo "[extensions]" >> $HGRCPATH
 echo "mq=" >> $HGRCPATH
diff --git a/tests/test-rebase-abort b/tests/test-rebase-abort
--- a/tests/test-rebase-abort
+++ b/tests/test-rebase-abort
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-source $TESTDIR/helpers.sh
+. $TESTDIR/helpers.sh
 
 echo "[extensions]" >> $HGRCPATH
 echo "graphlog=" >> $HGRCPATH
diff --git a/tests/test-rebase-cache b/tests/test-rebase-cache
--- a/tests/test-rebase-cache
+++ b/tests/test-rebase-cache
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-source $TESTDIR/helpers.sh
+. $TESTDIR/helpers.sh
 
 createrepo() {
     rm -rf repo
diff --git a/tests/test-rebase-check-restore b/tests/test-rebase-check-restore
--- a/tests/test-rebase-check-restore
+++ b/tests/test-rebase-check-restore
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-source $TESTDIR/helpers.sh
+. $TESTDIR/helpers.sh
 
 echo "[extensions]" >> $HGRCPATH
 echo "graphlog=" >> $HGRCPATH
diff --git a/tests/test-rebase-collapse b/tests/test-rebase-collapse
--- a/tests/test-rebase-collapse
+++ b/tests/test-rebase-collapse
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-source $TESTDIR/helpers.sh
+. $TESTDIR/helpers.sh
 
 echo "[extensions]" >> $HGRCPATH
 echo "graphlog=" >> $HGRCPATH
diff --git a/tests/test-rebase-conflicts b/tests/test-rebase-conflicts
--- a/tests/test-rebase-conflicts
+++ b/tests/test-rebase-conflicts
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-source $TESTDIR/helpers.sh
+. $TESTDIR/helpers.sh
 
 echo "[extensions]" >> $HGRCPATH
 echo "graphlog=" >> $HGRCPATH
diff --git a/tests/test-rebase-detach b/tests/test-rebase-detach
--- a/tests/test-rebase-detach
+++ b/tests/test-rebase-detach
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-source $TESTDIR/helpers.sh
+. $TESTDIR/helpers.sh
 
 echo "[extensions]" >> $HGRCPATH
 echo "graphlog=" >> $HGRCPATH
diff --git a/tests/test-rebase-interruptions b/tests/test-rebase-interruptions
--- a/tests/test-rebase-interruptions
+++ b/tests/test-rebase-interruptions
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-source $TESTDIR/helpers.sh
+. $TESTDIR/helpers.sh
 echo "[extensions]" >> $HGRCPATH
 echo "graphlog=" >> $HGRCPATH
 echo "rebase=" >> $HGRCPATH
diff --git a/tests/test-rebase-issue-noparam-single-rev b/tests/test-rebase-issue-noparam-single-rev
--- a/tests/test-rebase-issue-noparam-single-rev
+++ b/tests/test-rebase-issue-noparam-single-rev
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-source $TESTDIR/helpers.sh
+. $TESTDIR/helpers.sh
 
 echo "[extensions]" >> $HGRCPATH
 echo "graphlog=" >> $HGRCPATH
diff --git a/tests/test-rebase-mq b/tests/test-rebase-mq
--- a/tests/test-rebase-mq
+++ b/tests/test-rebase-mq
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-source $TESTDIR/helpers.sh
+. $TESTDIR/helpers.sh
 
 echo "[extensions]" >> $HGRCPATH
 echo "graphlog=" >> $HGRCPATH
diff --git a/tests/test-rebase-mq-skip b/tests/test-rebase-mq-skip
--- a/tests/test-rebase-mq-skip
+++ b/tests/test-rebase-mq-skip
@@ -2,7 +2,7 @@
 # This emulates the effects of an hg pull --rebase in which the remote repo 
 # already has one local mq patch
 
-source $TESTDIR/helpers.sh
+. $TESTDIR/helpers.sh
 
 echo "[extensions]" >> $HGRCPATH
 echo "graphlog=" >> $HGRCPATH
diff --git a/tests/test-rebase-newancestor b/tests/test-rebase-newancestor
--- a/tests/test-rebase-newancestor
+++ b/tests/test-rebase-newancestor
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-source $TESTDIR/helpers.sh
+. $TESTDIR/helpers.sh
 
 echo "[extensions]" >> $HGRCPATH
 echo "graphlog=" >> $HGRCPATH
diff --git a/tests/test-rebase-parameters b/tests/test-rebase-parameters
--- a/tests/test-rebase-parameters
+++ b/tests/test-rebase-parameters
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-source $TESTDIR/helpers.sh
+. $TESTDIR/helpers.sh
 
 echo "[extensions]" >> $HGRCPATH
 echo "rebase=" >> $HGRCPATH
diff --git a/tests/test-rebase-pull b/tests/test-rebase-pull
--- a/tests/test-rebase-pull
+++ b/tests/test-rebase-pull
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-source $TESTDIR/helpers.sh
+. $TESTDIR/helpers.sh
 
 echo "[extensions]" >> $HGRCPATH
 echo "graphlog=" >> $HGRCPATH
diff --git a/tests/test-rebase-rename b/tests/test-rebase-rename
--- a/tests/test-rebase-rename
+++ b/tests/test-rebase-rename
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-source $TESTDIR/helpers.sh
+. $TESTDIR/helpers.sh
 
 echo "[extensions]" >> $HGRCPATH
 echo "rebase=" >> $HGRCPATH
diff --git a/tests/test-rebase-scenario-global b/tests/test-rebase-scenario-global
--- a/tests/test-rebase-scenario-global
+++ b/tests/test-rebase-scenario-global
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-source $TESTDIR/helpers.sh
+. $TESTDIR/helpers.sh
 
 echo "[extensions]" >> $HGRCPATH
 echo "graphlog=" >> $HGRCPATH
diff --git a/tests/test-strip-cross b/tests/test-strip-cross
--- a/tests/test-strip-cross
+++ b/tests/test-strip-cross
@@ -2,7 +2,7 @@
 
 # test stripping of filelogs where the linkrev doesn't always increase
 
-source $TESTDIR/helpers.sh
+. $TESTDIR/helpers.sh
 echo '[extensions]' >> $HGRCPATH
 echo 'hgext.mq =' >> $HGRCPATH