diff --git a/conan/tools/cmake/cmake.py b/conan/tools/cmake/cmake.py
index 02a80b39cd7..6af622fc475 100644
--- a/conan/tools/cmake/cmake.py
+++ b/conan/tools/cmake/cmake.py
@@ -85,10 +85,9 @@ def configure(self, variables=None, build_script_folder=None, cli_args=None,
         cmakelist_folder = self._conanfile.source_folder
         if build_script_folder:
             cmakelist_folder = os.path.join(self._conanfile.source_folder, build_script_folder)
+        cmakelist_folder = cmakelist_folder.replace("\\", "/")
 
         build_folder = self._conanfile.build_folder
-        generator_folder = self._conanfile.generators_folder
-
         mkdir(self._conanfile, build_folder)
 
         arg_list = [self._cmake_program]
diff --git a/conans/test/unittests/tools/cmake/test_cmake_presets_definitions.py b/conans/test/unittests/tools/cmake/test_cmake_presets_definitions.py
index ff1cdaa6b28..8e06972d472 100644
--- a/conans/test/unittests/tools/cmake/test_cmake_presets_definitions.py
+++ b/conans/test/unittests/tools/cmake/test_cmake_presets_definitions.py
@@ -45,6 +45,7 @@ def run(command, **kwargs):
         assert '-DCMAKE_MAKE_PROGRAM="C:/mymake.exe"' in command
 
     conanfile.run = run
+    conanfile.folders.set_base_source(temp_folder())
     conanfile.conf.define("tools.gnu:make_program", "C:\\mymake.exe")
 
     with mock.patch("platform.system", mock.MagicMock(return_value='Windows')):