diff --git a/lib/gpu/lal_dpd_charged.cu b/lib/gpu/lal_dpd_charged.cu
index cf6c79c477..8f25210a83 100644
--- a/lib/gpu/lal_dpd_charged.cu
+++ b/lib/gpu/lal_dpd_charged.cu
@@ -292,8 +292,6 @@ __kernel void k_dpd_charged(const __global numtyp4 *restrict x_,
         if ( cutsq[mtype].w != 0.0 && rsq < cutsq[mtype].w){
           numtyp r2inv=ucl_recip(rsq);
           numtyp _erfc;
-
-          numtyp r = ucl_rsqrt(r2inv);
           numtyp grij = g_ewald * r;
           numtyp expm2 = ucl_exp(-grij*grij);
           numtyp t = ucl_recip((numtyp)1.0 + EWALD_P*grij);
@@ -478,8 +476,6 @@ __kernel void k_dpd_charged_fast(const __global numtyp4 *restrict x_,
         if ( cutsq[mtype].w != 0.0 && rsq < cutsq[mtype].w){
           numtyp r2inv=ucl_recip(rsq);
           numtyp _erfc;
-
-          numtyp r = ucl_rsqrt(r2inv);
           numtyp grij = g_ewald * r;
           numtyp expm2 = ucl_exp(-grij*grij);
           numtyp t = ucl_recip((numtyp)1.0 + EWALD_P*grij);