diff --git a/src/gallium/drivers/softpipe/Makefile.sources b/src/gallium/drivers/softpipe/Makefile.sources
index d72266f270f..e405ef27f85 100644
--- a/src/gallium/drivers/softpipe/Makefile.sources
+++ b/src/gallium/drivers/softpipe/Makefile.sources
@@ -1,5 +1,6 @@
 C_SOURCES := \
 	sp_buffer.c \
+	sp_buffer.h \
 	sp_clear.c \
 	sp_clear.h \
 	sp_context.c \