diff --git a/cscripts/Makefile.am b/cscripts/Makefile.am
index 5a6c64c..30d3702 100644
--- a/cscripts/Makefile.am
+++ b/cscripts/Makefile.am
@@ -144,6 +144,7 @@ testdata = $(top_srcdir)/test/data/crab.xml \
            $(top_srcdir)/test/data/workflow.xml \
            $(top_srcdir)/test/data/butterfly.txt \
            $(top_srcdir)/test/data/pha.fits \
+           $(top_srcdir)/test/data/pha_channels.fits \
            $(top_srcdir)/test/data/pull.dat \
            $(top_srcdir)/test/data/sensitivity.dat \
            $(top_srcdir)/test/data/spectrum.fits \
diff --git a/test/data/pha_channels.fits b/test/data/pha_channels.fits
new file mode 100644
index 0000000..ef3b2c9
--- /dev/null
+++ b/test/data/pha_channels.fits
diff --git a/test/test_examples.py.in b/test/test_examples.py.in
index d39aff9..b6454bf 100755
--- a/test/test_examples.py.in
+++ b/test/test_examples.py.in
@@ -300,7 +300,13 @@ class Test(gammalib.GPythonTestSuite):
         Test show_pha
         """
         # Set arguments
-        args = '-p example_show_pha.eps %s/pha.fits' % self._datadir
+        args = '-p example_show_pha1.eps %s/pha.fits' % self._datadir
+
+        # Execute script
+        self._execute_python('show_pha', args=args)
+
+        # Set arguments
+        args = '-p example_show_pha2.eps %s/pha_channels.fits' % self._datadir
 
         # Execute script
         self._execute_python('show_pha', args=args)