diff --git a/src/ZSOLVER/zsolver_inv.f90 b/src/ZSOLVER/zsolver_inv.f90
index 48dc2b7e10f4446646b7cf7fdbd362dfc8f3a094..c2e4b127fccef4e443c749023a3c22ffa2fd194a 100644
--- a/src/ZSOLVER/zsolver_inv.f90
+++ b/src/ZSOLVER/zsolver_inv.f90
@@ -139,7 +139,6 @@ SUBROUTINE ZSOLVER_INV(HLBCX,HLBCY,PDXHATM,PDYHATM,PRHOM,PAF,PBF,PCF, &
   USE MODE_ll
   USE MODD_ARGSLIST_ll, ONLY : LIST_ll
   !
-  USE MODI_FFT55
   USE MODI_GET_HALO
   USE MODI_FLAT_INV
   USE MODI_DOTPROD