diff --git a/src/liblzma/common/Makefile.inc b/src/liblzma/common/Makefile.inc
index 38a6341..6ca6add 100644
--- a/src/liblzma/common/Makefile.inc
+++ b/src/liblzma/common/Makefile.inc
@@ -21,6 +21,10 @@
 	common/stream_flags_common.h \
 	common/vli_size.c
 
+if COND_THREADS
+liblzma_la_SOURCES += common/hardware_cputhreads.c
+endif
+
 if COND_MAIN_ENCODER
 liblzma_la_SOURCES += \
 	common/alone_encoder.c \
@@ -45,7 +49,6 @@
 
 if COND_THREADS
 liblzma_la_SOURCES += \
-	common/hardware_cputhreads.c \
 	common/outqueue.c \
 	common/outqueue.h \
 	common/stream_encoder_mt.c