diff --git a/Makefile.am b/Makefile.am
index 4656427..58185e9 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -40,14 +40,12 @@ endif
 
 libserialport_la_LIBADD = $(LIBOBJS)
 
-libserialport_la_LDFLAGS = $(SP_LIB_LDFLAGS)
+libserialport_la_LDFLAGS = $(SP_LIB_LDFLAGS) -no-undefined
 
 if WIN32
 libserialport_la_LIBADD += $(SP_LIBS)
 endif
 
-libserialport_la_LDFLAGS += -no-undefined
-
 library_includedir = $(includedir)
 library_include_HEADERS = libserialport.h