diff --git a/PHonon/CMakeLists.txt b/PHonon/CMakeLists.txt
index 589eb805d..383040af1 100644
--- a/PHonon/CMakeLists.txt
+++ b/PHonon/CMakeLists.txt
@@ -212,6 +212,11 @@ set(sources_gamma
     Gamma/solve_ph.f90
     Gamma/writedyn.f90)
 
+set(sources_fd
+    FD/stop_pp.f90
+)
+    
+
 qe_add_library(qe_phonon_ph ${sources_ph})
 add_library(QE::PHonon::PH ALIAS qe_phonon_ph)
 target_link_libraries(qe_phonon_ph
@@ -238,6 +243,16 @@ target_link_libraries(qe_phonon_gamma
         QE::Modules
         QE::LR_Modules)
 
+qe_add_library(qe_phonon_fd ${sources_fd})
+add_library(QE::PHonon::FD ALIAS qe_phonon_fd)
+target_link_libraries(qe_phonon_fd
+    PRIVATE
+        QE::PW
+        QE::UTILX
+        QE::Modules
+        QE::LR_Modules)
+        
+
 ###########################################################
 # ph.x
 ###########################################################
@@ -428,7 +443,7 @@ qe_install_targets(
     qe_phonon_ph
     qe_phonon_phaux
     qe_phonon_gamma
-    # qe_phonon_fd
+    qe_phonon_fd
     # Executables
     qe_phonon_ph_exe
     qe_phonon_dynmat_exe