diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index c7279e35..daaa078d 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -54,10 +54,7 @@ else ()
   endif()
 endif ()
 
-# Skip the core_tests if we are running in Travis-CI because they will take too long
-if (NOT DEFINED ENV{TRAVIS})
-  add_subdirectory(core_tests)
-endif ()
+add_subdirectory(core_tests)
 add_subdirectory(crypto)
 add_subdirectory(functional_tests)
 add_subdirectory(performance_tests)