diff --git a/CMakeLists.txt b/CMakeLists.txt
index 746b38a..39808f9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -185,7 +185,10 @@
 
 add_subdirectory(library)
 add_subdirectory(include)
-add_subdirectory(tinycrypt)
+
+if(USE_TINYCRYPT)
+    add_subdirectory(tinycrypt)
+endif()
 
 if(ENABLE_PROGRAMS)
     add_subdirectory(programs)
diff --git a/library/CMakeLists.txt b/library/CMakeLists.txt
index 89f7275..0156856 100644
--- a/library/CMakeLists.txt
+++ b/library/CMakeLists.txt
@@ -1,4 +1,5 @@
 option(USE_STATIC_MBEDTLS_LIBRARY "Build mbed TLS static library." ON)
+option(USE_TINYCRYPT "Include TinyCrypt." ON)
 option(USE_SHARED_MBEDTLS_LIBRARY "Build mbed TLS shared library." OFF)
 option(LINK_WITH_PTHREAD "Explicitly link mbed TLS library to pthread." OFF)
 
@@ -123,7 +124,9 @@
     set(libs ${libs} pthread)
 endif()
 
-set(libs ${libs} tinycrypt)
+if(USE_TINYCRYPT)
+    set(libs ${libs} tinycrypt)
+endif()
 
 if (NOT USE_STATIC_MBEDTLS_LIBRARY AND NOT USE_SHARED_MBEDTLS_LIBRARY)
     message(FATAL_ERROR "Need to choose static or shared mbedtls build!")