diff --git a/NewKernel_d/test/NewKernel_d/Epick_d.cpp b/NewKernel_d/test/NewKernel_d/Epick_d.cpp
index a088a6d263f..a86ac47685d 100644
--- a/NewKernel_d/test/NewKernel_d/Epick_d.cpp
+++ b/NewKernel_d/test/NewKernel_d/Epick_d.cpp
@@ -437,6 +437,7 @@ void test2i(){
   assert(!ed(psp0,psp1));
   assert(!ed(psp0,psp2));
   assert(!ed(psp2,psp1));
+  using std::abs;
   assert(abs(sd(cent0,psp0)-25)<.0001);
   assert(abs(sd(cent0,psp1)-25)<.0001);
   assert(abs(sd(cent0,psp2)-25)<.0001);