diff --git a/rte/mo_rte_kind.F90 b/rte/mo_rte_kind.F90
index de9e13e90..1d98f0d50 100644
--- a/rte/mo_rte_kind.F90
+++ b/rte/mo_rte_kind.F90
@@ -26,7 +26,11 @@ module mo_rte_kind
   !
   ! Floating point working precision
   !
+#ifdef SINGLE_PREC
+  integer, parameter :: wp = sp
+#else
   integer, parameter :: wp = dp
+#endif
 
   !
   ! Logical - for use with kernels