diff --git a/fortran/src/CMakeLists.txt b/fortran/src/CMakeLists.txt
index e346a543ae..e237ec6e70 100644
--- a/fortran/src/CMakeLists.txt
+++ b/fortran/src/CMakeLists.txt
@@ -92,6 +92,7 @@ add_custom_command (
     WORKING_DIRECTORY ${HDF5_F90_BINARY_DIR}
     DEPENDS H5match_types
 )
+set_source_files_properties (${HDF5_F90_BINARY_DIR}/H5f90i_gen.h PROPERTIES GENERATED TRUE)
 set_source_files_properties (${HDF5_F90_BINARY_DIR}/H5fortran_types.F90 PROPERTIES GENERATED TRUE)
 
 #-----------------------------------------------------------------------------