diff --git a/src/liblzma/common/Makefile.inc b/src/liblzma/common/Makefile.inc
index dd5a8c88..76432767 100644
--- a/src/liblzma/common/Makefile.inc
+++ b/src/liblzma/common/Makefile.inc
@@ -24,6 +24,7 @@ if COND_MAIN_ENCODER
 liblzma_la_SOURCES += \
 	common/alone_encoder.c \
 	common/block_buffer_encoder.c \
+	common/block_buffer_encoder.h \
 	common/block_encoder.c \
 	common/block_encoder.h \
 	common/block_header_encoder.c \