diff --git a/kernels/pair_potentials.cuh b/kernels/pair_potentials.cuh
index d5d8566..d6c97ac 100644
--- a/kernels/pair_potentials.cuh
+++ b/kernels/pair_potentials.cuh
@@ -32,7 +32,7 @@ struct ForceAndEnergy {
 struct PairPotential {
   real m_rcutoffsq;
 
-  PairPotential(real rcutoff) : m_rcutoffsq(rcutoff * rcutoff) {};
+CUDA_CALLABLE  PairPotential(real rcutoff) : m_rcutoffsq(rcutoff * rcutoff) {};
 #ifdef __CUDACC__
   CUDA_CALLABLE ~PairPotential();
 #else