diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3650aca..a3c39ec 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.1)
+cmake_minimum_required(VERSION 3.5)
 project(JlCxx)
 
 # Cmake policies
diff --git a/src/c_interface.cpp b/src/c_interface.cpp
index f5a64c3..33b9ea1 100644
--- a/src/c_interface.cpp
+++ b/src/c_interface.cpp
@@ -62,7 +62,7 @@ JLCXX_API void initialize_cxxwrap(jl_value_t* julia_module, jl_value_t* cppfunct
   {
     if((jl_module_t*)julia_module != g_cxxwrap_module)
     {
-      throw std::runtime_error("Two different CxxWrap modules are loaded, aborting.");
+      jl_error("Two different CxxWrap modules are loaded, aborting.");
     }
     return;
   }
diff --git a/testlib-builder/src/testlib/CMakeLists.txt b/testlib-builder/src/testlib/CMakeLists.txt
index b6b76ce..0f1660b 100644
--- a/testlib-builder/src/testlib/CMakeLists.txt
+++ b/testlib-builder/src/testlib/CMakeLists.txt
@@ -1,6 +1,6 @@
 project(TestLib)
 
-cmake_minimum_required(VERSION 2.8.12)
+cmake_minimum_required(VERSION 3.5)
 set(CMAKE_MACOSX_RPATH 1)
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib")