diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index daaa078d..33f5226e 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -54,7 +54,9 @@ else ()
   endif()
 endif ()
 
-add_subdirectory(core_tests)
+if (NOT DEFINED ENV{TRAVIS})
+  add_subdirectory(core_tests)
+endif ()
 add_subdirectory(crypto)
 add_subdirectory(functional_tests)
 add_subdirectory(performance_tests)