diff --git a/CMakeLists.txt b/CMakeLists.txt
index a1f0648f..3c53de8f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -324,6 +324,8 @@ configure_file(
 # Add the AMG libraries
 #---------------------------------------
 
+# In your CMakeLists.txt
+set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -ffree-line-length-256")
 
 message(STATUS "MPI_LIBRARIES: ${MPI_LIBRARIES}")
 message(STATUS "MPI_CXX_LIBRARIES: ${MPI_CXX_LIBRARIES}")