diff --git a/unit-tests/empty-list.sh b/unit-tests/empty-list.sh
index 8f0f702..2588202 100755
--- a/unit-tests/empty-list.sh
+++ b/unit-tests/empty-list.sh
@@ -7,7 +7,7 @@
 #
 
 expected=nil
-actual=`echo "'()" | target/psse | tail -1`
+actual=`echo "'()" | target/psse 2>/dev/null | tail -1`
 
 if [ "${expected}" = "${actual}" ]
 then
diff --git a/unit-tests/empty-string.sh b/unit-tests/empty-string.sh
index a1e5baa..bdd7dfd 100755
--- a/unit-tests/empty-string.sh
+++ b/unit-tests/empty-string.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 expected="\"\""
-actual=`echo '""' | target/psse | tail -1`
+actual=`echo '""' | target/psse 2>/dev/null | tail -1`
 
 if [ "$expected" = "$actual" ]
 then
diff --git a/unit-tests/eval-integer.sh b/unit-tests/eval-integer.sh
index 1aadb39..6e93628 100755
--- a/unit-tests/eval-integer.sh
+++ b/unit-tests/eval-integer.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 expected='5'
-actual=`echo "(eval 5)" | target/psse | tail -1`
+actual=`echo "(eval 5)" | target/psse 2>/dev/null | tail -1`
 
 if [ "${expected}" = "${actual}" ]
 then
diff --git a/unit-tests/eval-quote-sexpr.sh b/unit-tests/eval-quote-sexpr.sh
index d83bbe8..9b3099d 100755
--- a/unit-tests/eval-quote-sexpr.sh
+++ b/unit-tests/eval-quote-sexpr.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 expected='5'
-actual=`echo "(eval '(add 2 3))" | target/psse | tail -1`
+actual=`echo "(eval '(add 2 3))" | target/psse 2>/dev/null | tail -1`
 
 if [ "${expected}" = "${actual}" ]
 then
@@ -10,3 +10,4 @@ else
     echo "Fail: expected '${expected}', got '${actual}'"
     exit 1
 fi
+ 2>/dev/null
\ No newline at end of file
diff --git a/unit-tests/eval-quote-symbol.sh b/unit-tests/eval-quote-symbol.sh
index e977461..1f25241 100755
--- a/unit-tests/eval-quote-symbol.sh
+++ b/unit-tests/eval-quote-symbol.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 expected='<Special form: ((:primitive . t) (:name . cond))>'
-actual=`echo "(eval 'cond)" | target/psse | tail -1`
+actual=`echo "(eval 'cond)" | target/psse 2>/dev/null | tail -1`
 
 if [ "${expected}" = "${actual}" ]
 then
diff --git a/unit-tests/eval-real.sh b/unit-tests/eval-real.sh
index 3aa16d7..965d445 100755
--- a/unit-tests/eval-real.sh
+++ b/unit-tests/eval-real.sh
@@ -3,7 +3,7 @@
 # for this test, trailing zeros can be ignored
 expected='5.05'
 actual=`echo "(eval 5.05)" |\
-  target/psse 2> /dev/null |\
+  target/psse 2>/dev/null |\
   sed 's/0*$//' |\
   tail -1`
 
diff --git a/unit-tests/eval-string.sh b/unit-tests/eval-string.sh
index 90f6f2c..95b987d 100755
--- a/unit-tests/eval-string.sh
+++ b/unit-tests/eval-string.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 expected='"5"'
-actual=`echo '(eval "5")' | target/psse | tail -1`
+actual=`echo '(eval "5")' | target/psse 2>/dev/null | tail -1`
 
 if [ "${expected}" = "${actual}" ]
 then
diff --git a/unit-tests/fred.sh b/unit-tests/fred.sh
index 8e3d513..82691b6 100755
--- a/unit-tests/fred.sh
+++ b/unit-tests/fred.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 expected='"Fred"'
-actual=`echo ${expected} | target/psse | tail -1`
+actual=`echo ${expected} | target/psse 2>/dev/null | tail -1`
 
 if [ "${expected}" = "${actual}" ]
 then
diff --git a/unit-tests/integer.sh b/unit-tests/integer.sh
index 18ae66e..3a1e542 100755
--- a/unit-tests/integer.sh
+++ b/unit-tests/integer.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 expected='354'
-actual=`echo ${expected} | target/psse | tail -1`
+actual=`echo ${expected} | target/psse 2>/dev/null | tail -1`
 
 if [ "${expected}" = "${actual}" ]
 then
diff --git a/unit-tests/interpreter.sh b/unit-tests/interpreter.sh
index 6f23fc9..a9c95bc 100755
--- a/unit-tests/interpreter.sh
+++ b/unit-tests/interpreter.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 expected='6'
-actual=`echo "(apply '(lambda (x y z) (/ (* y z) x)) '(2 3 4))" | target/psse | tail -1`
+actual=`echo "(apply '(lambda (x y z) (/ (* y z) x)) '(2 3 4))" | target/psse 2>/dev/null | tail -1`
 
 if [ "${expected}" = "${actual}" ]
 then
diff --git a/unit-tests/nlambda.sh b/unit-tests/nlambda.sh
index 68f0447..117c633 100755
--- a/unit-tests/nlambda.sh
+++ b/unit-tests/nlambda.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 expected='a'
-actual=`echo "((nlambda (x) x) a)" | target/psse | tail -1`
+actual=`echo "((nlambda (x) x) a)" | target/psse 2>/dev/null | tail -1`
 
 if [ "${expected}" = "${actual}" ]
 then
diff --git a/unit-tests/path-notation.sh b/unit-tests/path-notation.sh
index cbb9dea..3ba2e99 100755
--- a/unit-tests/path-notation.sh
+++ b/unit-tests/path-notation.sh
@@ -5,10 +5,9 @@ result=0
 #####################################################################
 # Create a path from root using compact path notation
 echo -n "$0: Create a path from root using compact path notation... "
-expected='(-> oblist :users :simon :functions (quote assoc))'
+expected='(-> (oblist) :users :simon :functions (quote assoc))'
 actual=`echo "'/:users:simon:functions/assoc" | target/psse 2>&1 | tail -1`
 
-echo -n "Path from root (oblist) using compact notation: "
 if [ "${expected}" = "${actual}" ]
 then
     echo "OK"