diff --git a/makefile b/makefile
index 00d3aed..d96c36f 100644
--- a/makefile
+++ b/makefile
@@ -32,8 +32,8 @@ UNITTEST_SOURCES := test/unittest/test_main.cpp
                     test/unittest/shellmatta_utils/test_utils_forwardCursor.cpp         \
                     test/unittest/shellmatta_utils/test_utils_clearInput.cpp            \
                     test/unittest/shellmatta_utils/test_utils_insertChars.cpp           \
-                    test/unittest/shellmatta_utils/test_utils_terminateInput.cpp  		\
-					test/unittest/shellmatta_utils/test_utils_removeChars.cpp      		\
+                    test/unittest/shellmatta_utils/test_utils_terminateInput.cpp        \
+                    test/unittest/shellmatta_utils/test_utils_removeChars.cpp           \
                     test/unittest/shellmatta_autocomplete/test_autocomplete_run.cpp     \
                     test/unittest/shellmatta_escape/test_escape_processArrowKeys.cpp    \
                     test/unittest/shellmatta_history/test_appendHistoryByte.cpp         \