diff --git a/examples/tclspice/tcl-testbench1/tcl-testbench1.sh b/examples/tclspice/tcl-testbench1/tcl-testbench1.sh
index 6c74f5e64..6de522778 100755
--- a/examples/tclspice/tcl-testbench1/tcl-testbench1.sh
+++ b/examples/tclspice/tcl-testbench1/tcl-testbench1.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # -*- mode: tcl -*- \
         exec wish -f "$0" ${1+"$@"}
 
diff --git a/examples/tclspice/tcl-testbench3/tcl-testbench3.sh b/examples/tclspice/tcl-testbench3/tcl-testbench3.sh
index e440d8d1e..0f6e6ef28 100755
--- a/examples/tclspice/tcl-testbench3/tcl-testbench3.sh
+++ b/examples/tclspice/tcl-testbench3/tcl-testbench3.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # -*- mode: tcl -*- \
         exec wish -f "$0" ${1+"$@"}