diff --git a/src/plugins/e-acsl/interval.ml b/src/plugins/e-acsl/interval.ml
index 4bf408a33b67d80ff6fb21f50c40896dfcdda8cd..8f262208a12b8bd78a5709aa18e15147f86eaafa 100644
--- a/src/plugins/e-acsl/interval.ml
+++ b/src/plugins/e-acsl/interval.ml
@@ -53,8 +53,8 @@ module D =
             Ival.compare i1 i2
           | Float (k1, f1), Float (k2, f2) ->
             (* faster to compare a kind than a float *)
-            let n = Stdlib.compare k1 k2 in
-            if n = 0 then Stdlib.compare f1 f2 else n
+            let n = Transitioning.Stdlib.compare k1 k2 in
+            if n = 0 then Transitioning.Stdlib.compare f1 f2 else n
           | Ival _, (Float _ | Rational | Real | Nan)
           | Float _, (Rational | Real | Nan)
           | Rational, (Real | Nan)
@@ -92,7 +92,7 @@ module D =
 let is_included i1 i2 = match i1, i2 with
   | Ival i1, Ival i2 -> Ival.is_included i1 i2
   | Float(k1, f1), Float(k2, f2) ->
-    Stdlib.compare k1 k2 <= 0
+    Transitioning.Stdlib.compare k1 k2 <= 0
     && (match f1, f2 with
         | None, None | Some _, None -> true
         | None, Some _ -> false
@@ -125,7 +125,7 @@ let lift_binop ~safe_float f i1 i2 = match i1, i2 with
   | Ival i1, Ival i2 ->
     Ival (f i1 i2)
   | Float(k1, _), Float(k2, _) when safe_float ->
-    let k = if Stdlib.compare k1 k2 >= 0 then k1 else k2 in
+    let k = if Transitioning.Stdlib.compare k1 k2 >= 0 then k1 else k2 in
     Float(k, None (* lost value, if any before *))
   | Ival iv, Float(k, _)
   | Float(k, _), Ival iv ->
diff --git a/src/plugins/e-acsl/typing.ml b/src/plugins/e-acsl/typing.ml
index 8abc13fd1cbfcffe19254939ee5fff78a29ee12c..2e38092451762ce6bc5cb878d38acb095e4fa1b4 100644
--- a/src/plugins/e-acsl/typing.ml
+++ b/src/plugins/e-acsl/typing.ml
@@ -67,7 +67,7 @@ module D =
             if i1 = i2 then 0
             else if Cil.intTypeIncluded i1 i2 then -1 else 1
           | C_float f1, C_float f2 ->
-            Stdlib.compare f1 f2
+            Transitioning.Stdlib.compare f1 f2
           | (C_integer _ | C_float _ | Gmpz | Rational | Real), Nan
           | (C_integer _ | C_float _ | Gmpz | Rational ), Real
           | (C_integer _ | C_float _ | Gmpz), Rational