diff --git a/tools/tcptop.py b/tools/tcptop.py
index 9ca10f62210c..4b448e850623 100755
--- a/tools/tcptop.py
+++ b/tools/tcptop.py
@@ -149,7 +149,7 @@ def range_check(string):
     u64 *val, zero = 0;
 
     if (copied <= 0)
-	    return 0;
+        return 0;
 
     if (family == AF_INET) {
         struct ipv4_key_t ipv4_key = {.pid = pid};