diff --git a/gas/ChangeLog b/gas/ChangeLog
index 01080b94350..ddf4803ab18 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,8 @@
+2022-01-17  Sergey Belyashov  <sergey.belyashov@gmail.com>
+
+	PR 28762
+	* app.c (do_scrub_chars): Correct handling when the symbol is not 'af'.
+
 2021-12-16  Nick Clifton  <nickc@redhat.com>
 
 	PR 28686
diff --git a/gas/app.c b/gas/app.c
index c798b6a12e4..dd96b410bad 100644
--- a/gas/app.c
+++ b/gas/app.c
@@ -748,6 +748,8 @@ do_scrub_chars (size_t (*get) (char *, size_t), char *tostart, size_t tolen)
 	    }
 	  else
 	    {
+	      if (ch != EOF)
+		UNGET (ch);
 	      state = 9;
 	      break;
 	    }