diff --git a/compiler/main/mls2obc.ml b/compiler/main/mls2obc.ml
index 0055595..4cbd9c7 100644
--- a/compiler/main/mls2obc.ml
+++ b/compiler/main/mls2obc.ml
@@ -46,7 +46,7 @@ let rec bound_check_expr idx_list bounds =
   match (idx_list, bounds) with
     | [idx], [n] ->
         mk_exp (Eop (op_from_string "<",
-                     [ idx; mk_exp (Econst n)]))
+                     [idx; mk_exp (Econst n)]))
     | (idx :: idx_list, n :: bounds) ->
         let e = mk_exp (Eop (op_from_string "<",
                              [idx; mk_exp (Econst n)])) in
diff --git a/compiler/obc/c/cgen.ml b/compiler/obc/c/cgen.ml
index 067e153..cdae0d9 100644
--- a/compiler/obc/c/cgen.ml
+++ b/compiler/obc/c/cgen.ml
@@ -115,7 +115,7 @@ let copname = function
   | "-" -> "-" | "*" -> "*" | "/" -> "/" | "*." -> "*" | "/." -> "/"
   | "+." -> "+" | "-." -> "-" | "<"  -> "<" | ">"  -> ">" | "<=" -> "<="
   | ">=" -> ">="
-  | "~-" -> "-" | "not" -> "!"
+  | "~-" -> "-" | "not" -> "!" | "%" -> "%"
   | op   -> op
 
 (** Translates an Obc var_dec to a tuple (name, cty). *)
@@ -201,7 +201,7 @@ let rec create_affect_lit dest l ty =
 
 (** Creates the expression dest <- src (copying arrays if necessary). *)
 and create_affect_stm dest src ty =
-  match ty  with
+  match ty with
     | Cty_arr (n, bty) ->
         (match src with
            | Carraylit l -> create_affect_lit dest l bty
@@ -240,7 +240,7 @@ let rec cexpr_of_static_exp se =
     | Svar ln ->
         (try
           let cd = find_const ln in
-            cexpr_of_static_exp (Static.simplify QualEnv.empty cd.c_value)
+          cexpr_of_static_exp (Static.simplify QualEnv.empty cd.c_value)
         with Not_found -> assert false)
     | Sop _ ->
         let se' = Static.simplify QualEnv.empty se in
@@ -283,7 +283,7 @@ and cop_of_op_aux op_name cexps = match op_name with
               "=" | "<>"
             | "&" | "or"
             | "+" | "-" | "*" | "/"
-            | "*." | "/." | "+." | "-."
+            | "*." | "/." | "+." | "-." | "%"
             | "<" | ">" | "<=" | ">="), [el;er] ->
               Cbop (copname op, el, er)
           | _ -> Cfun_call(op, cexps)
diff --git a/lib/pervasives.epi b/lib/pervasives.epi
index 86fabf3..2e76e49 100644
--- a/lib/pervasives.epi
+++ b/lib/pervasives.epi
@@ -7,6 +7,7 @@ type float
 val fun (&)(bool;bool) returns (bool)
 val fun ( * )(int;int) returns (int)
 val fun ( *. )(float;float) returns (float)
+val fun (%)(int;int) returns (int)
 val fun (+)(int;int) returns (int)
 val fun (+.)(float;float) returns (float)
 val fun (-)(int;int) returns (int)