diff --git a/mandel.s b/mandel.s
index 317e3b1..f053748 100644
--- a/mandel.s
+++ b/mandel.s
@@ -141,7 +141,7 @@ str_self:
     .byte "MANDEL-6502"
 str_self_end:
 str_speed:
-    .byte " ms/px"
+    .byte " sec/px"
 str_speed_end:
 str_run:
     .byte " RUN"
@@ -195,9 +195,9 @@ aspect_x: ; fixed3.13 5/4
 aspect_y: ; fixed3.13 3/4
     .word 3 << (13 - 2)
 
-ms_per_frame: ; float48 16.66666667
-    .byte 64  ; exponent/sign
-    .byte $16 ; BCD digits
+sec_per_frame: ; float48 0.016666667
+    .byte 63  ; exponent/sign
+    .byte $01 ; BCD digits
     .byte $66
     .byte $66
     .byte $66
@@ -208,7 +208,7 @@ total_pixels: ; float48
         .byte 0
     .endrepeat
 
-total_ms: ; float48
+total_sec: ; float48
     .repeat 6
         .byte 0
     .endrepeat
@@ -1574,10 +1574,10 @@ main_loop:
     sta count_frames
     sta count_pixels
 
-    ; total_ms = 0.0; total_pixels = 0.0
+    ; total_sec = 0.0; total_pixels = 0.0
     jsr ZFR0
-    ldx #.lobyte(total_ms)
-    ldy #.hibyte(total_ms)
+    ldx #.lobyte(total_sec)
+    ldy #.hibyte(total_sec)
     jsr FST0R
     ldx #.lobyte(total_pixels)
     ldy #.hibyte(total_pixels)
@@ -1697,21 +1697,21 @@ update_status:
     sta count_frames
     jsr IFP
 
-    ; FR0 *= ms_per_frame
-    ldx #.lobyte(ms_per_frame)
-    ldy #.hibyte(ms_per_frame)
+    ; FR0 *= sec_per_frame
+    ldx #.lobyte(sec_per_frame)
+    ldy #.hibyte(sec_per_frame)
     jsr FLD1R
     jsr FMUL
 
-    ; FR0 += total_ms
-    ldx #.lobyte(total_ms)
-    ldy #.hibyte(total_ms)
+    ; FR0 += total_sec
+    ldx #.lobyte(total_sec)
+    ldy #.hibyte(total_sec)
     jsr FLD1R
     jsr FADD
 
-    ; total_ms = FR0
-    ldx #.lobyte(total_ms)
-    ldy #.hibyte(total_ms)
+    ; total_sec = FR0
+    ldx #.lobyte(total_sec)
+    ldy #.hibyte(total_sec)
     jsr FST0R
 
     ; FR0 /= total_pixels