diff --git a/src/apicodegen.py b/src/apicodegen.py
index e6acec0..5694522 100644
--- a/src/apicodegen.py
+++ b/src/apicodegen.py
@@ -213,7 +213,7 @@
 
 reduce_ops = ('and', 'or', 'xor', 'max', 'min', 'sum', 'prod')
 reduce_team = """
-int shmem_{TYPENAME}_{OP}_reduce(shmem_team_t team, {TYPE} *dest, const {TYPE} *source, size_t nreduce);
+void shmem_{TYPENAME}_{OP}_reduce(shmem_team_t team, {TYPE} *dest, const {TYPE} *source, size_t nreduce);
 """  # noqa
 
 wait = """