diff --git a/tests/su/03/su_run_command13.test b/tests/su/03/su_run_command13.test
index c52dd933..0b042b96 100755
--- a/tests/su/03/su_run_command13.test
+++ b/tests/su/03/su_run_command13.test
@@ -17,6 +17,7 @@ trap 'log_status "$0" "FAILURE"; restore_config' 0
 
 change_config
 
+export SHELL=/bin/sh
 echo "/bin/su -p -c pwd -- - myuser> tmp/out 2> tmp/err"
 /bin/su -p -c pwd -- - myuser> tmp/out 2> tmp/err
 
diff --git a/tests/su/03/su_run_command14.test b/tests/su/03/su_run_command14.test
index 82f29271..c8fc49b7 100755
--- a/tests/su/03/su_run_command14.test
+++ b/tests/su/03/su_run_command14.test
@@ -17,6 +17,7 @@ trap 'log_status "$0" "FAILURE"; restore_config' 0
 
 change_config
 
+export SHELL=/bin/sh
 echo "/bin/su -p -c pwd - myuser> tmp/out 2> tmp/err"
 /bin/su -p -c pwd - myuser> tmp/out 2> tmp/err
 
diff --git a/tests/su/03/su_run_command15.test b/tests/su/03/su_run_command15.test
index 7e34e48f..d57b27de 100755
--- a/tests/su/03/su_run_command15.test
+++ b/tests/su/03/su_run_command15.test
@@ -17,6 +17,7 @@ trap 'log_status "$0" "FAILURE"; restore_config' 0
 
 change_config
 
+export SHELL=/bin/sh
 echo "/bin/su -c pwd -p - myuser> tmp/out 2> tmp/err"
 /bin/su -c pwd -p - myuser> tmp/out 2> tmp/err
 
diff --git a/tests/su/03/su_run_command16.test b/tests/su/03/su_run_command16.test
index 4fbe1afa..28765168 100755
--- a/tests/su/03/su_run_command16.test
+++ b/tests/su/03/su_run_command16.test
@@ -17,6 +17,7 @@ trap 'log_status "$0" "FAILURE"; restore_config' 0
 
 change_config
 
+export SHELL=/bin/sh
 echo "/bin/su -c pwd - -p myuser> tmp/out 2> tmp/err"
 /bin/su -c pwd - -p myuser> tmp/out 2> tmp/err
 
diff --git a/tests/su/03/su_run_command17.test b/tests/su/03/su_run_command17.test
index c1f15c5e..b423faa5 100755
--- a/tests/su/03/su_run_command17.test
+++ b/tests/su/03/su_run_command17.test
@@ -17,6 +17,7 @@ trap 'log_status "$0" "FAILURE"; restore_config' 0
 
 change_config
 
+export SHELL=/bin/sh
 echo "/bin/su -c pwd - myuser -p> tmp/out 2> tmp/err"
 /bin/su -c pwd - myuser -p> tmp/out 2> tmp/err