diff --git a/src/liblzma/common/Makefile.inc b/src/liblzma/common/Makefile.inc
index 78bc95bb..5efa13a0 100644
--- a/src/liblzma/common/Makefile.inc
+++ b/src/liblzma/common/Makefile.inc
@@ -39,7 +39,6 @@ liblzma_la_SOURCES += \
 	common/easy_buffer_encoder.c \
 	common/easy_encoder.c \
 	common/easy_encoder_memusage.c \
-	common/microlzma_encoder.c \
 	common/filter_buffer_encoder.c \
 	common/filter_encoder.c \
 	common/filter_encoder.h \
@@ -55,6 +54,11 @@ if COND_THREADS
 liblzma_la_SOURCES += \
 	common/stream_encoder_mt.c
 endif
+
+if COND_MICROLZMA
+liblzma_la_SOURCES += \
+	common/microlzma_encoder.c
+endif
 endif
 
 if COND_MAIN_DECODER
@@ -67,7 +71,6 @@ liblzma_la_SOURCES += \
 	common/block_decoder.h \
 	common/block_header_decoder.c \
 	common/easy_decoder_memusage.c \
-	common/microlzma_decoder.c \
 	common/file_info.c \
 	common/filter_buffer_decoder.c \
 	common/filter_decoder.c \
@@ -86,4 +89,9 @@ if COND_THREADS
 liblzma_la_SOURCES += \
 	common/stream_decoder_mt.c
 endif
+
+if COND_MICROLZMA
+liblzma_la_SOURCES += \
+	common/microlzma_decoder.c
+endif
 endif