diff --git a/stim/cuda/templates/conv2sep.cuh b/stim/cuda/templates/conv2sep.cuh
index d2e111a..26e4a05 100644
--- a/stim/cuda/templates/conv2sep.cuh
+++ b/stim/cuda/templates/conv2sep.cuh
@@ -8,8 +8,6 @@
 #include <stim/cuda/sharedmem.cuh>
 #include <stim/cuda/cudatools/error.h>
 
-#define pi	3.14159
-
 namespace stim{
 	namespace cuda{
 
--
libgit2 0.21.4