diff --git a/collects/plot/tests/extreme-bounds-tests.rkt b/collects/plot/tests/extreme-bounds-tests.rkt
index f541814ced..4abdabe561 100644
--- a/collects/plot/tests/extreme-bounds-tests.rkt
+++ b/collects/plot/tests/extreme-bounds-tests.rkt
@@ -1,12 +1,12 @@
 #lang racket
 
-(require plot plot/utils)
+(require plot plot/utils unstable/flonum)
 
 (plot-x-label #f)
 (plot-y-label #f)
 
 (define stops (list (* 2 (inexact->exact -max.0))
-                    -max.0 -min.0 0 +min.0 +max.0
+                    -max.0 -min.0 0.0 +min.0 +max.0
                     (* 2 (inexact->exact +max.0))))
 
 (define (extreme-real->string x)
diff --git a/collects/plot/tests/selection-tests.rkt b/collects/plot/tests/selection-tests.rkt
index c8281fa592..36e97d1698 100644
--- a/collects/plot/tests/selection-tests.rkt
+++ b/collects/plot/tests/selection-tests.rkt
@@ -2,7 +2,7 @@
 
 ;; These tests aren't meant to be run so much as manipulated after running
 
-(require plot plot/utils)
+(require plot plot/utils unstable/flonum)
 
 (parameterize ([plot-x-transform  log-transform])
   (plot (function values +min.0 1)))