diff --git a/src/Makefile.am b/src/Makefile.am
index fc13bb227..93f331d6b 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1250,12 +1250,12 @@ module_rtp_recv_la_CFLAGS = $(AM_CFLAGS)
 module_jack_sink_la_SOURCES = modules/module-jack-sink.c
 module_jack_sink_la_LDFLAGS = -module -avoid-version
 module_jack_sink_la_LIBADD = $(AM_LIBADD) libpulsecore.la $(JACK_LIBS)
-module_jack_sink_la_CFLAGS = $(AM_LIBADD) $(JACK_CFLAGS)
+module_jack_sink_la_CFLAGS = $(AM_CFLAGS) $(JACK_CFLAGS)
 
 module_jack_source_la_SOURCES = modules/module-jack-source.c
 module_jack_source_la_LDFLAGS = -module -avoid-version
 module_jack_source_la_LIBADD = $(AM_LIBADD) libpulsecore.la $(JACK_LIBS)
-module_jack_source_la_CFLAGS = $(AM_LIBADD) $(JACK_CFLAGS)
+module_jack_source_la_CFLAGS = $(AM_CFLAGS) $(JACK_CFLAGS)
 
 # HAL
 libdbus_util_la_SOURCES = modules/dbus-util.c modules/dbus-util.h