diff --git a/cmake/scripts/RootUseFile.cmake.in b/cmake/scripts/RootUseFile.cmake.in
index 045926d836a79..a4197441819f6 100644
--- a/cmake/scripts/RootUseFile.cmake.in
+++ b/cmake/scripts/RootUseFile.cmake.in
@@ -9,4 +9,4 @@ link_directories(${ROOT_LIBRARY_DIR})
 add_definitions(${ROOT_DEFINITIONS})
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${ROOT_CXX_FLAGS}")
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${ROOT_C_FLAGS}")
-set(CMAKE_fortran_FLAGS "${CMAKE_fortran_FLAGS} ${ROOT_fortran_FLAGS}")
+set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} ${ROOT_fortran_FLAGS}")
diff --git a/etc/cmake/RootUseFile.cmake b/etc/cmake/RootUseFile.cmake
index b9a8e34e822c0..f931ad3384f35 100644
--- a/etc/cmake/RootUseFile.cmake
+++ b/etc/cmake/RootUseFile.cmake
@@ -6,4 +6,4 @@ link_directories(${ROOT_LIBRARY_DIR})
 add_definitions(${ROOT_DEFINITIONS})
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${ROOT_CXX_FLAGS}")
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${ROOT_C_FLAGS}")
-set(CMAKE_fortran_FLAGS "${CMAKE_fortran_FLAGS} ${ROOT_fortran_FLAGS}")
+set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} ${ROOT_fortran_FLAGS}")