diff --git a/librocksdb-sys/Makefile b/librocksdb-sys/Makefile
index 8e5405a..07dc2f5 100644
--- a/librocksdb-sys/Makefile
+++ b/librocksdb-sys/Makefile
@@ -1,6 +1,6 @@
 include rocksdb/src.mk
 
 rocksdb_lib_sources.txt: rocksdb/src.mk
-    @echo -n ${LIB_SOURCES} > rocksdb_lib_sources.txt
+	@echo -n ${LIB_SOURCES} > rocksdb_lib_sources.txt
 
 gen_lib_sources: rocksdb_lib_sources.txt