diff --git a/TwigCS/Tests/AbstractSniffTest.php b/TwigCS/tests/AbstractSniffTest.php
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rename from TwigCS/Tests/AbstractSniffTest.php
rename to TwigCS/tests/AbstractSniffTest.php
diff --git a/TwigCS/Tests/Fixtures/BlankEOFTest.fixed.twig b/TwigCS/tests/Fixtures/BlankEOFTest.fixed.twig
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rename from TwigCS/Tests/Fixtures/BlankEOFTest.fixed.twig
rename to TwigCS/tests/Fixtures/BlankEOFTest.fixed.twig
diff --git a/TwigCS/Tests/Fixtures/BlankEOFTest.twig b/TwigCS/tests/Fixtures/BlankEOFTest.twig
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rename from TwigCS/Tests/Fixtures/BlankEOFTest.twig
rename to TwigCS/tests/Fixtures/BlankEOFTest.twig
diff --git a/TwigCS/Tests/Fixtures/DelimiterSpacingTest.fixed.twig b/TwigCS/tests/Fixtures/DelimiterSpacingTest.fixed.twig
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rename from TwigCS/Tests/Fixtures/DelimiterSpacingTest.fixed.twig
rename to TwigCS/tests/Fixtures/DelimiterSpacingTest.fixed.twig
diff --git a/TwigCS/Tests/Fixtures/DelimiterSpacingTest.twig b/TwigCS/tests/Fixtures/DelimiterSpacingTest.twig
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rename from TwigCS/Tests/Fixtures/DelimiterSpacingTest.twig
rename to TwigCS/tests/Fixtures/DelimiterSpacingTest.twig
diff --git a/TwigCS/Tests/Fixtures/EmptyLinesTest.fixed.twig b/TwigCS/tests/Fixtures/EmptyLinesTest.fixed.twig
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rename from TwigCS/Tests/Fixtures/EmptyLinesTest.fixed.twig
rename to TwigCS/tests/Fixtures/EmptyLinesTest.fixed.twig
diff --git a/TwigCS/Tests/Fixtures/EmptyLinesTest.twig b/TwigCS/tests/Fixtures/EmptyLinesTest.twig
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rename from TwigCS/Tests/Fixtures/EmptyLinesTest.twig
rename to TwigCS/tests/Fixtures/EmptyLinesTest.twig
diff --git a/TwigCS/Tests/Fixtures/OperatorSpacingTest.fixed.twig b/TwigCS/tests/Fixtures/OperatorSpacingTest.fixed.twig
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rename from TwigCS/Tests/Fixtures/OperatorSpacingTest.fixed.twig
rename to TwigCS/tests/Fixtures/OperatorSpacingTest.fixed.twig
diff --git a/TwigCS/Tests/Fixtures/OperatorSpacingTest.twig b/TwigCS/tests/Fixtures/OperatorSpacingTest.twig
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rename from TwigCS/Tests/Fixtures/OperatorSpacingTest.twig
rename to TwigCS/tests/Fixtures/OperatorSpacingTest.twig
diff --git a/TwigCS/Tests/Ruleset/Generic/BlankEOFTest.php b/TwigCS/tests/Ruleset/Generic/BlankEOFTest.php
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rename from TwigCS/Tests/Ruleset/Generic/BlankEOFTest.php
rename to TwigCS/tests/Ruleset/Generic/BlankEOFTest.php
diff --git a/TwigCS/Tests/Ruleset/Generic/DelimiterSpacingTest.php b/TwigCS/tests/Ruleset/Generic/DelimiterSpacingTest.php
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rename from TwigCS/Tests/Ruleset/Generic/DelimiterSpacingTest.php
rename to TwigCS/tests/Ruleset/Generic/DelimiterSpacingTest.php
diff --git a/TwigCS/Tests/Ruleset/Generic/EmptyLinesTest.php b/TwigCS/tests/Ruleset/Generic/EmptyLinesTest.php
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rename from TwigCS/Tests/Ruleset/Generic/EmptyLinesTest.php
rename to TwigCS/tests/Ruleset/Generic/EmptyLinesTest.php
diff --git a/TwigCS/Tests/Ruleset/Generic/OperatorSpacingTest.php b/TwigCS/tests/Ruleset/Generic/OperatorSpacingTest.php
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rename from TwigCS/Tests/Ruleset/Generic/OperatorSpacingTest.php
rename to TwigCS/tests/Ruleset/Generic/OperatorSpacingTest.php