diff --git a/cmake/Modules/Packages/KSPACE.cmake b/cmake/Modules/Packages/KSPACE.cmake
index db12787013..2a586dccf3 100644
--- a/cmake/Modules/Packages/KSPACE.cmake
+++ b/cmake/Modules/Packages/KSPACE.cmake
@@ -19,7 +19,7 @@ if(PKG_KSPACE)
   if(FFT STREQUAL "FFTW3")
     find_package(${FFTW} REQUIRED)
     add_definitions(-DFFT_FFTW3)
-    target_link_libraries(lammps PRIVATE ${FFTW}::${FFTW})
+    target_link_libraries(lammps PUBLIC ${FFTW}::${FFTW})
     if(FFTW3_OMP_LIBRARY OR FFTW3F_OMP_LIBRARY)
       option(FFT_FFTW_THREADS "Use threaded FFTW library" ON)
     else()