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-rw-r--r--src/haikufns.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/haikufns.c b/src/haikufns.c
index d0436bbb96d..58a2e1d4642 100644
--- a/src/haikufns.c
+++ b/src/haikufns.c
@@ -1876,7 +1876,7 @@ DEFUN ("x-display-mm-width", Fx_display_mm_width, Sx_display_mm_width, 0, 1, 0,
int width, height;
BScreen_px_dim (&width, &height);
- return make_fixnum (height / (dpyinfo->resy / 25.4));
+ return make_fixnum (width / (dpyinfo->resx / 25.4));
}
DEFUN ("x-create-frame", Fx_create_frame, Sx_create_frame,