diff --git a/sound/drivers/opl3/Makefile b/sound/drivers/opl3/Makefile
index 7f2c2a10c4e5..d72b1e7b51c4 100644
--- a/sound/drivers/opl3/Makefile
+++ b/sound/drivers/opl3/Makefile
@@ -5,7 +5,9 @@
 
 snd-opl3-lib-objs := opl3_lib.o opl3_synth.o
 snd-opl3-synth-y := opl3_seq.o opl3_midi.o opl3_drums.o
-snd-opl3-synth-$(CONFIG_SND_SEQUENCER_OSS) += opl3_oss.o
+ifneq ($(CONFIG_SND_SEQUENCER_OSS),)
+snd-opl3-synth-y += opl3_oss.o
+endif
 
 obj-$(CONFIG_SND_OPL3_LIB) += snd-opl3-lib.o
 obj-$(CONFIG_SND_OPL4_LIB) += snd-opl3-lib.o
diff --git a/sound/synth/emux/Makefile b/sound/synth/emux/Makefile
index 4599108452fd..d1bac923eb1b 100644
--- a/sound/synth/emux/Makefile
+++ b/sound/synth/emux/Makefile
@@ -6,6 +6,8 @@
 snd-emux-synth-objs := emux.o emux_synth.o emux_seq.o emux_nrpn.o \
 		       emux_effect.o emux_hwdep.o soundfont.o
 snd-emux-synth-$(CONFIG_SND_PROC_FS) += emux_proc.o
-snd-emux-synth-$(CONFIG_SND_SEQUENCER_OSS) += emux_oss.o
+ifneq ($(CONFIG_SND_SEQUENCER_OSS),)
+snd-emux-synth-y += emux_oss.o
+endif
 
 obj-$(CONFIG_SND_SYNTH_EMUX) += snd-emux-synth.o