diff --git a/01/tests/CMakeLists.txt b/01/tests/CMakeLists.txt
index f2a2124..7437db3 100644
--- a/01/tests/CMakeLists.txt
+++ b/01/tests/CMakeLists.txt
@@ -62,11 +62,14 @@ if(ENABLE_COVERAGE)
     add_dependencies(coverage tests ${PROJECT_NAME})
     add_custom_command(
       OUTPUT  ${covname}
+      COMMAND rm -rf **/coverage
       COMMAND ${LCOV} -c -o ${covname} -d ${CMAKE_BINARY_DIR}/tests/CMakeFiles/tests.dir/ -b . --gcov-tool ${GCOV}
       COMMAND ${LCOV} -r ${covname} -o ${covname} "*/tests/*" "*/_deps/**/*" "/usr/include/c++/**/*" "/usr/include/c++/11/**/*"
       COMMAND ${LCOV} -l ${covname}
       COMMAND ${GENHTML} ${covname} -output coverage
       COMMAND ${LCOV} -l ${covname} 2>/dev/null | grep Total | sed 's/|//g' | sed 's/Total://g' | awk '{print $1}' | sed s/%//g > coverage/total
+      COMMAND rm -rf CMakeFiles/tests.dir/src/*.gcda CMakeFiles/tests.dir/src/*.gcno
+      COMMAND rm -f ${covname}
     )
     set_directory_properties(PROPERTIES
       ADDITIONAL_CLEAN_FILES ${covname}
diff --git a/C_Tempate/tests/CMakeLists.txt b/C_Tempate/tests/CMakeLists.txt
index f2a2124..7437db3 100644
--- a/C_Tempate/tests/CMakeLists.txt
+++ b/C_Tempate/tests/CMakeLists.txt
@@ -62,11 +62,14 @@ if(ENABLE_COVERAGE)
     add_dependencies(coverage tests ${PROJECT_NAME})
     add_custom_command(
       OUTPUT  ${covname}
+      COMMAND rm -rf **/coverage
       COMMAND ${LCOV} -c -o ${covname} -d ${CMAKE_BINARY_DIR}/tests/CMakeFiles/tests.dir/ -b . --gcov-tool ${GCOV}
       COMMAND ${LCOV} -r ${covname} -o ${covname} "*/tests/*" "*/_deps/**/*" "/usr/include/c++/**/*" "/usr/include/c++/11/**/*"
       COMMAND ${LCOV} -l ${covname}
       COMMAND ${GENHTML} ${covname} -output coverage
       COMMAND ${LCOV} -l ${covname} 2>/dev/null | grep Total | sed 's/|//g' | sed 's/Total://g' | awk '{print $1}' | sed s/%//g > coverage/total
+      COMMAND rm -rf CMakeFiles/tests.dir/src/*.gcda CMakeFiles/tests.dir/src/*.gcno
+      COMMAND rm -f ${covname}
     )
     set_directory_properties(PROPERTIES
       ADDITIONAL_CLEAN_FILES ${covname}