diff --git a/CMakeLists.txt b/CMakeLists.txt
index eba67ae..0d7be89 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -99,8 +99,8 @@
   add_definitions(-DBORINGSSL_UNSAFE_FUZZER_MODE)
   set(RUNNER_ARGS "-fuzzer")
 
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=address -fsanitize-coverage=edge,indirect-calls")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -fsanitize-coverage=edge,indirect-calls")
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=address -fsanitize-coverage=edge,indirect-calls,8bit-counters")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -fsanitize-coverage=edge,indirect-calls,8bit-counters")
   set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_C_FLAGS} -fsanitize=address")
   link_directories(.)
 endif()