diff --git a/infer/src/Makefile b/infer/src/Makefile
index 3f4245615..d4d1eff6a 100644
--- a/infer/src/Makefile
+++ b/infer/src/Makefile
@@ -22,7 +22,7 @@ ATDGEN_SUFFIXES = _t.ml _t.mli _j.ml _j.mli
 
 #### ocamlbuild options ####
 
-OCAML_FATAL_WARNINGS = +3+5+6+8+10+11+12+18+19+20+23+26+29+27+33+34+35+37+38+39+50
+OCAML_FATAL_WARNINGS = +3+5+6+8+10+11+12+18+19+20+21+23+26+29+27+33+34+35+37+38+39+50+52+57
 
 # options for ocamlbuild
 # Notice that use-ocamlfind is used here to avoid a linker bug in ocamlbuild when using -tag thread
diff --git a/infer/src/unit/accessPathTests.ml b/infer/src/unit/accessPathTests.ml
index f95305ab5..8087616ee 100644
--- a/infer/src/unit/accessPathTests.ml
+++ b/infer/src/unit/accessPathTests.ml
@@ -115,8 +115,7 @@ let tests =
           assert_equal ~cmp:AccessPath.Raw.equal ap1 xFG;
           assert_equal ~cmp:AccessPath.Raw.equal ap2 xF;
       | _ ->
-          assert false;
-          () in
+          assert false in
     "of_exp">::of_exp_test_ in
 
   let abstraction_test =