1 files changed, 2 insertions, 2 deletions

diff --git a/src/xterm.c b/src/xterm.c
index efa9c00ce27..67335d4915e 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -6333,8 +6333,8 @@ x_list_fonts (f, pattern, size, maxnames)
                   if (NILP (Fassoc (tem, list)))
                     {
                       if (STRINGP (Vx_pixel_size_width_font_regexp)
-                          && (fast_string_match_ignore_case
-                              (Vx_pixel_size_width_font_regexp, names[i])
+                          && ((fast_c_string_match_ignore_case
+                               (Vx_pixel_size_width_font_regexp, names[i]))
                               >= 0))
                         /* We can set the value of PIXEL_SIZE to the
                           width of this font.  */