diff --git a/drivers/cvc4.drv b/drivers/cvc4.drv
index 21ccbca26d1507b82c78229d719c5c0ae27f2c2a..538bf7f4634a82b0cb3319696ae9f13cc20da31b 100644
--- a/drivers/cvc4.drv
+++ b/drivers/cvc4.drv
@@ -1,9 +1,2 @@
 import "cvc4_bare.drv"
 import "discrimination.gen"
-
-(*
-Local Variables:
-mode: why
-compile-command: "unset LANG; make -C .. bench"
-End:
-*)
diff --git a/drivers/cvc4_bare.drv b/drivers/cvc4_bare.drv
index 432a7167698ac6b7086ba29db8768b3eefcd48c0..c372adf08f56abb977615d2632b5455ea6fb88dc 100644
--- a/drivers/cvc4_bare.drv
+++ b/drivers/cvc4_bare.drv
@@ -8,8 +8,7 @@ prelude "(set-logic AUFNIRA)"   (* how come bv is supported by cvc4 in this logi
 
 import "smt-libv2.drv"
 
-(* CVC4 division seems to be neither the Euclidean one,
-nor the Computer one *)
+(* CVC4 division seems to be neither the Euclidean one, nor the Computer one *)
 (*
 theory int.EuclideanDivision
    syntax function div "(div %1 %2)"
@@ -29,10 +28,3 @@ theory int.ComputerDivision
    remove prop Div_1
 end
 *)
-
-(*
-Local Variables:
-mode: why
-compile-command: "unset LANG; make -C .. bench"
-End:
-*)
diff --git a/drivers/smt-libv2.drv b/drivers/smt-libv2.drv
index 024c12c6a00c83d71865214813fbf190e1a7924d..594f2a78a3edf2b8dad53dea70bfba06760ad2e0 100644
--- a/drivers/smt-libv2.drv
+++ b/drivers/smt-libv2.drv
@@ -468,10 +468,3 @@ theory bv.BVConverter_8_16
 
   remove prop back_from_bigBV
 end
-
-(*
-Local Variables:
-mode: why
-compile-command: "unset LANG; make -C .. bench"
-End:
-*)
diff --git a/drivers/z3.drv b/drivers/z3.drv
index 60d01662ee1d733d7e42bd634953e4975dd4d5e8..cb771b71eff313e750ef383b35a266d26a1e52ee 100644
--- a/drivers/z3.drv
+++ b/drivers/z3.drv
@@ -1,9 +1,2 @@
 import "z3_bare.drv"
 import "discrimination.gen"
-
-(*
-Local Variables:
-mode: why
-compile-command: "unset LANG; make -C .. bench"
-End:
-*)
diff --git a/drivers/z3_bare.drv b/drivers/z3_bare.drv
index de397aa9115329772e832a2bd176e09bf0f8fa3f..5de0de7344c63b7d4f716b7bd7f091f596e4c93f 100644
--- a/drivers/z3_bare.drv
+++ b/drivers/z3_bare.drv
@@ -1,3 +1,10 @@
+prelude "(set-logic AUFNIRA)"
+(** A  : Array
+    UF : Uninterpreted Function
+    DT : Datatypes (not needed at the end ...)
+    NIRA : NonLinear Integer Reals Arithmetic
+*)
+
 import "smt-libv2.drv"
 
 (* div/mod of Z3 seems to be Euclidean Division *)
@@ -19,10 +26,3 @@ theory real.FromInt
   remove prop Mul
   remove prop Neg
 end
-
-(*
-Local Variables:
-mode: why
-compile-command: "unset LANG; make -C .. bench"
-End:
-*)