diff --git a/hls_2018/router_03/router.cpp b/hls_2018/router_03/router.cpp
index 9d01b73aef8b6b914010732fae7b3d120aadfdfd..b6f255e7f3813b86c671803ddd63d374bd421721 100755
--- a/hls_2018/router_03/router.cpp
+++ b/hls_2018/router_03/router.cpp
@@ -51,7 +51,7 @@ bool pynqrouter(char boardstr[BOARDSTR_SIZE], ap_uint<32> seed, ap_int<32> *stat
     // For each line
     // Note: Should not partition completely
     bool adjacents[MAX_LINES];              // Line has adjacent terminals?
-    ap_uint<CELL_BIT> starts[MAX_LINES];	// Start list
+    ap_uint<CELL_BIT> starts[MAX_LINES];    // Start list
     ap_uint<CELL_BIT> goals[MAX_LINES];     // Goal list
     ap_uint<BUFF_BIT> s_idx[MAX_LINES];     // Start point on line buffer