diff --git a/Python/pythonrun.c b/Python/pythonrun.c
index cf8f7bf..1b0a84b 100644
--- a/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@ -1363,11 +1363,8 @@
     if (offset == -1)
         return;
     PyFile_WriteString("    ", f);
-    offset--;
-    while (offset > 0) {
+    while (--offset)
         PyFile_WriteString(" ", f);
-        offset--;
-    }
     PyFile_WriteString("^\n", f);
 }