1 files changed, 1 insertions, 1 deletions

diff --git a/src/xfaces.c b/src/xfaces.c
index 676f1d77254..859c46a703d 100644
--- a/src/xfaces.c
+++ b/src/xfaces.c
@@ -2227,7 +2227,7 @@ split_font_name (f, font, numeric_p)
 
               /* Check that the matrix contains 4 floating point
                  numbers.  */
-              for (j = 0, start = font->fields[i] + 1;
+              for (j = 0, start = font->fields[i - 1] + 1;
                    j < 4;
                    ++j, start = end)
                 if (strtod (start, &end) == 0 && start == end)