diff --git a/include/dtl/Diff.hpp b/include/dtl/diff.hpp
similarity index 99%
rename from include/dtl/Diff.hpp
rename to include/dtl/diff.hpp
index 8f1ee4c..b262b84 100644
--- a/include/dtl/Diff.hpp
+++ b/include/dtl/diff.hpp
@@ -38,9 +38,9 @@
 #ifndef DTL_DIFF_H
 #define DTL_DIFF_H
 
-#include "dtl/Lcs.hpp"
-#include "dtl/Ses.hpp"
 #include "dtl/functors.hpp"
+#include "dtl/lcs.hpp"
+#include "dtl/ses.hpp"
 #include "dtl/variables.hpp"
 
 namespace dtl {
diff --git a/include/dtl/Diff3.hpp b/include/dtl/diff3.hpp
similarity index 99%
rename from include/dtl/Diff3.hpp
rename to include/dtl/diff3.hpp
index 70dffc9..4ba0b57 100644
--- a/include/dtl/Diff3.hpp
+++ b/include/dtl/diff3.hpp
@@ -38,7 +38,7 @@
 #ifndef DTL_DIFF3_H
 #define DTL_DIFF3_H
 
-#include "dtl/Diff.hpp"
+#include "dtl/diff.hpp"
 
 namespace dtl {
 
diff --git a/include/dtl/dtl.hpp b/include/dtl/dtl.hpp
index 1f0a691..7aa00e5 100644
--- a/include/dtl/dtl.hpp
+++ b/include/dtl/dtl.hpp
@@ -36,12 +36,12 @@
 #ifndef DTL_H
 #define DTL_H
 
-#include "dtl/Diff.hpp"
-#include "dtl/Diff3.hpp"
-#include "dtl/Lcs.hpp"
-#include "dtl/Sequence.hpp"
-#include "dtl/Ses.hpp"
+#include "dtl/diff.hpp"
+#include "dtl/diff3.hpp"
 #include "dtl/functors.hpp"
+#include "dtl/lcs.hpp"
+#include "dtl/sequence.hpp"
+#include "dtl/ses.hpp"
 #include "dtl/variables.hpp"
 
 #endif // DTL_H
diff --git a/include/dtl/Lcs.hpp b/include/dtl/lcs.hpp
similarity index 98%
rename from include/dtl/Lcs.hpp
rename to include/dtl/lcs.hpp
index 4b4a4c5..d27b8dd 100644
--- a/include/dtl/Lcs.hpp
+++ b/include/dtl/lcs.hpp
@@ -38,7 +38,7 @@
 #ifndef DTL_LCS_H
 #define DTL_LCS_H
 
-#include "dtl/Sequence.hpp"
+#include "dtl/sequence.hpp"
 
 namespace dtl {
 
diff --git a/include/dtl/Sequence.hpp b/include/dtl/sequence.hpp
similarity index 100%
rename from include/dtl/Sequence.hpp
rename to include/dtl/sequence.hpp
diff --git a/include/dtl/Ses.hpp b/include/dtl/ses.hpp
similarity index 99%
rename from include/dtl/Ses.hpp
rename to include/dtl/ses.hpp
index ca44762..057e03d 100644
--- a/include/dtl/Ses.hpp
+++ b/include/dtl/ses.hpp
@@ -41,8 +41,8 @@
 #include <utility>
 #include <vector>
 
+#include "dtl/sequence.hpp"
 #include "dtl/variables.hpp"
-#include "dtl/Sequence.hpp"
 
 namespace dtl {
 
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 2a73724..e33a61b 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -2,13 +2,13 @@ enable_testing()
 find_package(GTest REQUIRED)
 
 add_executable(dtl_test 
-  test/Intdifftest.cpp
-  test/Objdifftest.cpp
-  test/Patchtest.cpp
-  test/Strdiff3test.cpp
-  test/Strdifftest.cpp
   test/dtl_test.cpp
   test/dtl_test_common.cpp
+  test/intdifftest.cpp
+  test/objdifftest.cpp
+  test/patchtest.cpp
+  test/strdiff3test.cpp
+  test/strdifftest.cpp
 )
 
 target_include_directories(dtl_test BEFORE PRIVATE
diff --git a/test/Intdifftest.cpp b/test/intdifftest.cpp
similarity index 100%
rename from test/Intdifftest.cpp
rename to test/intdifftest.cpp
diff --git a/test/Objdifftest.cpp b/test/objdifftest.cpp
similarity index 100%
rename from test/Objdifftest.cpp
rename to test/objdifftest.cpp
diff --git a/test/Patchtest.cpp b/test/patchtest.cpp
similarity index 100%
rename from test/Patchtest.cpp
rename to test/patchtest.cpp
diff --git a/test/Strdiff3test.cpp b/test/strdiff3test.cpp
similarity index 100%
rename from test/Strdiff3test.cpp
rename to test/strdiff3test.cpp
diff --git a/test/Strdifftest.cpp b/test/strdifftest.cpp
similarity index 100%
rename from test/Strdifftest.cpp
rename to test/strdifftest.cpp