diff --git a/SConstruct b/SConstruct
index 07b791cb0..19063b865 100644
--- a/SConstruct
+++ b/SConstruct
@@ -102,7 +102,7 @@ def appendVal(env,var,targetVar,val=None):
 def handleNoBugSwitches(env):
     """ set the build level for NoBug. 
         Release builds imply no DEBUG
-        wheras ALPHA and BETA require DEBUG
+        whereas ALPHA and BETA require DEBUG
     """
     level = env['BUILDLEVEL']
     if level in ['ALPHA', 'BETA']:
@@ -128,6 +128,8 @@ def defineCmdlineOptions():
                     allowed_values=('ALPHA', 'BETA', 'RELEASE'))
         ,BoolOption('DEBUG', 'Build with debugging information and no optimizations', False)
         ,BoolOption('OPTIMIZE', 'Build with strong optimization (-O3)', False)
+        ,BoolOption('VALGRIND', 'Run Testsuite under valgrind control', True)
+        ,('TESTSUITES', 'Run only Testsuites matching the given pattern', '')
 #       ,BoolOption('OPENGL', 'Include support for OpenGL preview rendering', False)
 #       ,EnumOption('DIST_TARGET', 'Build target architecture', 'auto', 
 #                   allowed_values=('auto', 'i386', 'i686', 'x86_64' ), ignorecase=2)
diff --git a/src/gui/gtk-lumiera.cpp b/src/gui/gtk-lumiera.cpp
index 341587d81..66698150c 100644
--- a/src/gui/gtk-lumiera.cpp
+++ b/src/gui/gtk-lumiera.cpp
@@ -27,7 +27,6 @@ NOBUG_CPP_DEFINE_FLAG(gui);
 
 using namespace Gtk;
 using namespace Glib;
-using namespace sigc;
 using namespace gui;
 
 GtkLumiera the_application;
diff --git a/src/tool/try.cpp b/src/tool/try.cpp
index 90bdfadf8..cd654bf73 100644
--- a/src/tool/try.cpp
+++ b/src/tool/try.cpp
@@ -5,9 +5,6 @@
 
 // 8/07  - how to control NOBUG??
 //         execute with   NOBUG_LOG='ttt:TRACE' bin/try
-// 1/08  - working out a static initialisation problem for Visitor (Tag creation)
-// 1/08  - check 64bit longs
-// 4/08  - comparison operators on shared_ptr<Asset>
 
 
 #include <nobug.h>
@@ -22,7 +19,8 @@ using std::cout;
 
 
 
-int main (int argc, char* argv[])
+int 
+main (int argc, char* argv[])
   {
     
     NOBUG_INIT;
diff --git a/tests/SConscript b/tests/SConscript
index d47b9d943..cd4fd2ae3 100644
--- a/tests/SConscript
+++ b/tests/SConscript
@@ -3,6 +3,7 @@
 ## SConscript  -  SCons buildscript for the Testsuite (called by SConstruct)
 ##
 
+import os
 from os import path
 from Buildhelper import srcSubtree
 from Buildhelper import scanSubtree
@@ -92,9 +93,16 @@ artifacts['testsuite'] = ts = ( [ testExecutable(env, dir) for dir in moduledirs
 #
 #  - the product of running the Testsuite is the ",testlog"
 #  - it depends on all artifacts defined as "ts" above
+#  - if not set via options switch, the environment variable TESTSUITES
+#    is explicitly propagated to test.sh
 #
 testEnv = env.Clone()
-testEnv.Append(ENV = {'VALGRINDFLAGS' : 'DISABLE'})
+if not env['VALGRIND']:
+    testEnv.Append(ENV = {'VALGRINDFLAGS' : 'DISABLE'})
+testsuites = env['TESTSUITES'] or os.environ.get('TESTSUITES')
+if testsuites:
+    testEnv['ENV']['TESTSUITES'] = testsuites 
+ 
 testDir = env.Dir('#$BINDIR')
 runTest = env.File("test.sh").abspath
 
@@ -110,5 +118,5 @@ runTs = testEnv.Command(',testlog', ts, runTest,  chdir=testDir)
 env.Alias('testcode', ts )
 env.Alias('check', runTs )
 
-# declare tempfiles of test.sh as cleanable  
+# allow tempfiles of test.sh to be cleaned  
 env.Clean ('check', [',testlog.pre',',expect_stdout',',stdout',',stderr',',testtmp','.libs']) 
diff --git a/tests/test.sh b/tests/test.sh
index e2d5159b7..31c92da5b 100755
--- a/tests/test.sh
+++ b/tests/test.sh
@@ -200,7 +200,8 @@ function RUNTESTS()
         echo "$t"
     done | sort | uniq | {
         while read i; do
-            echo $i >&2
+            echo
+            echo "### $i" >&2
             if test -f $i; then
                 source $i
             fi