diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0ac9b66..d6d0cd2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -28,7 +28,7 @@ if(NOT BUILD_TESTS)
     set_target_properties(
         ${FORTUTF}
         PROPERTIES
-        Fortran_MODULE_DIRECTORY "${Fortran_MODULE_DIRECTORY}"
+        Fortran_MODULE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/modules
     )
 endif()
 
diff --git a/cmake/fortutf.cmake b/cmake/fortutf.cmake
index 6e2afb5..83f45f2 100644
--- a/cmake/fortutf.cmake
+++ b/cmake/fortutf.cmake
@@ -118,7 +118,7 @@ function(FortUTF_Find_Tests)
         set_target_properties(
             ${FORTUTF}
             PROPERTIES
-            Fortran_MODULE_DIRECTORY "${Fortran_MODULE_DIRECTORY}"
+            Fortran_MODULE_DIRECTORY ${Fortran_MODULE_DIRECTORY}
         )
     endif()