diff --git a/changes/ticket22870 b/changes/ticket22870
new file mode 100644
index 000000000..07cc8a1d0
--- /dev/null
+++ b/changes/ticket22870
@@ -0,0 +1,5 @@
+  o Minor bugfixes (consensus diff):
+    - test_consdiff_base64cmp would fail on OS X because while OS X
+      follows the standard of (less than zero/zero/greater than zero),
+      it doesn't follow the convention of (-1/0/+1). Make the test
+      comply with the standard. Fixes bug 22870; bugfix on 0.3.1.1-alpha.
diff --git a/src/test/test_consdiff.c b/src/test/test_consdiff.c
index 23948d686..7cf8d6ba2 100644
--- a/src/test/test_consdiff.c
+++ b/src/test/test_consdiff.c
@@ -415,18 +415,18 @@ test_consdiff_base64cmp(void *arg)
   tt_int_op(-1, OP_EQ, base64cmp_wrapper("abcABC/+ ", "abcABC/+a"));
 
   /* Comparisons that would return differently with strcmp(). */
-  tt_int_op(-1, OP_EQ, strcmp("/foo", "Afoo"));
-  tt_int_op(1, OP_EQ, base64cmp_wrapper("/foo", "Afoo"));
-  tt_int_op(1, OP_EQ, strcmp("Afoo", "0foo"));
-  tt_int_op(-1, OP_EQ, base64cmp_wrapper("Afoo", "0foo"));
+  tt_int_op(strcmp("/foo", "Afoo"), OP_LT, 0);
+  tt_int_op(base64cmp_wrapper("/foo", "Afoo"), OP_GT, 0);
+  tt_int_op(strcmp("Afoo", "0foo"), OP_GT, 0);
+  tt_int_op(base64cmp_wrapper("Afoo", "0foo"), OP_LT, 0);
 
   /* Comparisons that would return the same as with strcmp(). */
-  tt_int_op(1, OP_EQ, strcmp("afoo", "Afoo"));
-  tt_int_op(1, OP_EQ, base64cmp_wrapper("afoo", "Afoo"));
+  tt_int_op(strcmp("afoo", "Afoo"), OP_GT, 0);
+  tt_int_op(base64cmp_wrapper("afoo", "Afoo"), OP_GT, 0);
 
   /* Different lengths */
-  tt_int_op(-1, OP_EQ, base64cmp_wrapper("afoo", "afooo"));
-  tt_int_op(1, OP_EQ, base64cmp_wrapper("afooo", "afoo"));
+  tt_int_op(base64cmp_wrapper("afoo", "afooo"), OP_LT, 0);
+  tt_int_op(base64cmp_wrapper("afooo", "afoo"), OP_GT, 0);
 
  done:
   ;