diff --git a/Makefile.am b/Makefile.am
index 2a05035..718873c 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -18,6 +18,9 @@ if ASIO
 	include/asiodrivers.cpp \
 	include/asiolist.cpp \
 	include/iasiothiscallresolver.cpp
+
+# due to warning in asiolist.cpp
+%C%_librtaudio_la_CXXFLAGS += -Wno-error=unused-but-set-variable
 endif
 
 rtaudio_incdir = $(includedir)/rtaudio