1 files changed, 2 insertions, 2 deletions

diff --git a/src/dispextern.h b/src/dispextern.h
index 18b05b5db0e..2f80ac3615f 100644
--- a/src/dispextern.h
+++ b/src/dispextern.h
@@ -974,7 +974,7 @@ struct glyph_row *matrix_row P_ ((struct glyph_matrix *, int));
    or a control char, or an overlay string.  */
 
 #define MATRIX_ROW_ENDS_IN_MIDDLE_OF_CHAR_P(ROW)        \
-     ((ROW)->end.dpvec_index >= 0                       \
+     ((ROW)->end.dpvec_index > 0                        \
       || (ROW)->end.overlay_string_index >= 0           \
       || (ROW)->ends_in_middle_of_char_p)
 
@@ -986,7 +986,7 @@ struct glyph_row *matrix_row P_ ((struct glyph_matrix *, int));
 /* Non-zero if ROW starts in the middle of a character.  See above.  */
 
 #define MATRIX_ROW_STARTS_IN_MIDDLE_OF_CHAR_P(ROW)      \
-     ((ROW)->start.dpvec_index >= 0                     \
+     ((ROW)->start.dpvec_index > 0                      \
       || (ROW)->starts_in_middle_of_char_p              \
       || ((ROW)->start.overlay_string_index >= 0        \
           && (ROW)->start.string_pos.charpos > 0))