diff --git a/src/systemc/tests/SConscript b/src/systemc/tests/SConscript
index 74ec0e0..0ecd6ad 100644
--- a/src/systemc/tests/SConscript
+++ b/src/systemc/tests/SConscript
@@ -61,7 +61,6 @@
                 'compile_only' : self.compile_only
             }
 
-    ext_dir = Dir('..').Dir('ext')
     test_dir = Dir('.')
     class SystemCTestBin(Executable):
         def __init__(self, test):
@@ -77,7 +76,6 @@
                 filter(lambda f: f not in to_remove, env['CCFLAGS'])
 
             env.Append(CPPPATH=test_dir.Dir('include'))
-            env.Append(CPPPATH=ext_dir)
 
             shared_lib_path = env['SHARED_LIB'][0].abspath
             sl_dir, sl_base = os.path.split(shared_lib_path)