diff --git a/src/libshmem/fallback.h b/src/libshmem/fallback.h
index ae0b757..339b240 100644
--- a/src/libshmem/fallback.h
+++ b/src/libshmem/fallback.h
@@ -658,8 +658,8 @@ PySHMEM_REDUCE_2(longlong,   long long)
 PySHMEM_REDUCE_2(float,      float)
 PySHMEM_REDUCE_2(double,     double)
 PySHMEM_REDUCE_2(longdouble, long double)
-PySHMEM_REDUCE_1(complexf,   float _Complex)
-PySHMEM_REDUCE_1(complexd,   double _Complex)
+//PySHMEM_REDUCE_1(complexf,   float _Complex)
+//PySHMEM_REDUCE_1(complexd,   double _Complex)
 
 #define PySHMEM_REDUCE_UINT_OP(TYPENAME, TYPE, OP)                      \
 static                                                                  \