1 files changed, 1 insertions, 1 deletions
diff --git a/SConstruct b/SConstruct
index fb233645..a62a824b 100644
--- a/SConstruct
+++ b/SConstruct
@@ -107,7 +107,7 @@ for cppunit_tests_env, boost_tests_env in zip(envs.cppunit_tests.AllVariantEnvs(
 ###### Build the documentation in build/doc ######
 docs_env = envs.base
 Export('docs_env')
-SConscript(['doc/SConscript'], variant_dir = 'build/doc')
+SConscript(['doc/SConscript'], variant_dir = 'build/doc', duplicate = False)
 Alias('docs', 'doc-html')
 Alias('docs', 'doc-text')
 Alias('docs', 'doc-man')