diff --git a/unittest/fortran/CMakeLists.txt b/unittest/fortran/CMakeLists.txt
index fa3049b003..1062766e43 100644
--- a/unittest/fortran/CMakeLists.txt
+++ b/unittest/fortran/CMakeLists.txt
@@ -29,7 +29,8 @@ if(CMAKE_Fortran_COMPILER)
   add_library(flammps STATIC ${LAMMPS_FORTRAN_MODULE})
 
   add_executable(test_fortran_create wrap_create.cpp test_fortran_create.f90)
-  target_link_libraries(test_fortran_create PRIVATE flammps lammps MPI::MPI_Fortran GTest::GTestMain)
+  target_link_libraries(test_fortran_create PRIVATE lammps MPI::MPI_Fortran GTest::GTestMain)
+  target_include_directories(test_fortran_create PRIVATE "${LAMMPS_SOURCE_DIR}/../fortran")
   add_test(NAME FortranOpen COMMAND test_fortran_create)
 
   add_executable(test_fortran_commands wrap_commands.cpp test_fortran_commands.f90)
diff --git a/unittest/fortran/test_fortran_create.f90 b/unittest/fortran/test_fortran_create.f90
index e1df7502cb..4d56fa9815 100644
--- a/unittest/fortran/test_fortran_create.f90
+++ b/unittest/fortran/test_fortran_create.f90
@@ -1,3 +1,5 @@
+include 'lammps.f90'
+
 MODULE keepcreate
   USE liblammps
   TYPE(LAMMPS) :: lmp