diff --git a/vimrc b/vimrc
index bf88f7b..b1a37b3 100644
--- a/vimrc
+++ b/vimrc
@@ -347,7 +347,7 @@ if (&term =~ "^xterm")
 endif
 
 " Terminal.app does not support back color erase
-if ($TERM_PROGRAM == "Apple_Terminal" && $TERM_PROGRAM_VERSION <= 273)
+if ($TERM_PROGRAM ==# "Apple_Terminal" && $TERM_PROGRAM_VERSION <= 273)
    set t_ut=
 endif