diff --git a/src/test-number.cc b/src/test-number.cc
index fb0c831af..74f905993 100644
--- a/src/test-number.cc
+++ b/src/test-number.cc
@@ -142,7 +142,7 @@ main (int argc, char **argv)
 
     double pv;
     assert (hb_parse_double (&pp, end, &pv));
-    assert ((int) (pv * 1000.) == 123);
+    assert ((int) roundf (pv * 1000.) == 123);
     assert (pp - str == 4);
     assert (end - pp == 1);
   }
@@ -154,7 +154,7 @@ main (int argc, char **argv)
 
     double pv;
     assert (hb_parse_double (&pp, end, &pv));
-    assert ((int) (pv * 1000.) == 123);
+    assert ((int) roundf (pv * 1000.) == 123);
     assert (pp - str == 5);
     assert (end - pp == 0);
   }
@@ -166,7 +166,7 @@ main (int argc, char **argv)
 
     double pv;
     assert (hb_parse_double (&pp, end, &pv));
-    assert ((int) (pv * 1000.) == 123);
+    assert ((int) roundf (pv * 1000.) == 123);
     assert (pp - str == 7);
     assert (end - pp == 0);
   }
@@ -178,7 +178,7 @@ main (int argc, char **argv)
 
     double pv;
     assert (hb_parse_double (&pp, end, &pv));
-    assert ((int) (pv * 1000.) == 123);
+    assert ((int) roundf (pv * 1000.) == 123);
     assert (pp - str == 6);
     assert (end - pp == 0);
   }
@@ -190,7 +190,7 @@ main (int argc, char **argv)
 
     double pv;
     assert (hb_parse_double (&pp, end, &pv));
-    assert ((int) (pv * 1000.) == 123);
+    assert ((int) roundf (pv * 1000.) == 123);
     assert (pp - str == 10);
     assert (end - pp == 0);
   }
@@ -202,7 +202,7 @@ main (int argc, char **argv)
 
     double pv;
     assert (hb_parse_double (&pp, end, &pv));
-    assert ((int) (pv * 1000.) == -123);
+    assert ((int) roundf (pv * 1000.) == -123);
     assert (pp - str == 13);
     assert (end - pp == 0);
   }
@@ -214,7 +214,7 @@ main (int argc, char **argv)
 
     double pv;
     assert (hb_parse_double (&pp, end, &pv));
-    assert ((int) (pv * 1000.) == -123);
+    assert ((int) roundf (pv * 1000.) == -123);
     assert (pp - str == 8);
     assert (end - pp == 0);
   }