diff --git a/src/test/confidence/arrayassignment/test.sh b/src/test/confidence/arrayassignment/test.sh
index b4cb1ee8..570e2268 100755
--- a/src/test/confidence/arrayassignment/test.sh
+++ b/src/test/confidence/arrayassignment/test.sh
@@ -1,3 +1,4 @@
+#!
 . ../testenv.sh
 voc aa.mod -m
 ./aa >result
diff --git a/src/test/confidence/hello/test.sh b/src/test/confidence/hello/test.sh
index 006a3f01..ac683cb9 100755
--- a/src/test/confidence/hello/test.sh
+++ b/src/test/confidence/hello/test.sh
@@ -1,3 +1,4 @@
+#!
 . ../testenv.sh
 # Generate mixed source and assembly code listing
 CFLAGS="-gstabs -g1 -Wa,-acdhln=hello.s" && voc hello.mod -m
diff --git a/src/test/confidence/language/test.sh b/src/test/confidence/language/test.sh
index 18d8e9cf..a593488c 100644
--- a/src/test/confidence/language/test.sh
+++ b/src/test/confidence/language/test.sh
@@ -1,3 +1,4 @@
+#!
 . ../testenv.sh
 # Generate mixed source and assembly code listing
 voc TestLanguage.mod -m
diff --git a/src/test/confidence/lola/test.sh b/src/test/confidence/lola/test.sh
index c8d4a27a..77f401e0 100755
--- a/src/test/confidence/lola/test.sh
+++ b/src/test/confidence/lola/test.sh
@@ -1,3 +1,4 @@
+#!
 . ../testenv.sh
 voc LSS.Mod LSB.Mod LSC.Mod LSV.Mod lola.Mod -m
 ./Lola RISC5.Lola result
diff --git a/src/test/confidence/signal/test.sh b/src/test/confidence/signal/test.sh
index ab1d584c..d18c022d 100755
--- a/src/test/confidence/signal/test.sh
+++ b/src/test/confidence/signal/test.sh
@@ -1,3 +1,4 @@
+#!
 . ../testenv.sh
 voc signal.mod -m
 ./SignalTest x &
diff --git a/src/test/confidence/testenv.sh b/src/test/confidence/testenv.sh
index 6c8cfb93..85352592 100755
--- a/src/test/confidence/testenv.sh
+++ b/src/test/confidence/testenv.sh
@@ -1,3 +1,4 @@
+#!
 ## '.' this file from individual test.sh files.
 #set -e
 if which cygpath >/dev/null
diff --git a/src/test/confidence/testresult.sh b/src/test/confidence/testresult.sh
index 171fd1b1..10a82930 100755
--- a/src/test/confidence/testresult.sh
+++ b/src/test/confidence/testresult.sh
@@ -1,3 +1,4 @@
+#!
 # '.' this from indiviual test.sh files
 if diff -b expected result
 then printf "PASSED: $PWD\n\n"