diff --git a/CMakeLists.txt b/CMakeLists.txt
index f004808..4ffed79 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -85,7 +85,6 @@
   set(COSE_C_COVERALLS OFF)
 endif()
 
-add_definitions(-DUSE_ARRAY)
 if(CMAKE_C_COMPILER_ID STREQUAL "GNU" OR CMAKE_C_COMPILER_ID MATCHES "Clang")
   message(STATUS "adding GCC/Clang options ")
   add_definitions(-std=gnu99 -Wall -Wextra -pedantic)