diff --git a/wrap/python/spot.py b/wrap/python/spot.py
index 1392a0285..24b5b8b1e 100644
--- a/wrap/python/spot.py
+++ b/wrap/python/spot.py
@@ -198,7 +198,7 @@ def translate(formula, output='tgba', pref='small', level='high',
     if type(formula) == str:
         formula = parse_formula(formula)
 
-    a = translator()
+    a = translator(_bdd_dict)
 
     if type(output) == str:
         output_ = output.lower()
diff --git a/wrap/python/tests/automata.ipynb b/wrap/python/tests/automata.ipynb
index 07dc0bf1a..36c30646e 100644
--- a/wrap/python/tests/automata.ipynb
+++ b/wrap/python/tests/automata.ipynb
@@ -18,7 +18,7 @@
    "version": "3.4.2"
   },
   "name": "",
-  "signature": "sha256:8277d563756e7b9333f4900705ae07524e2902b49f4c79ceb40739a865a177c4"
+  "signature": "sha256:7bcd29a20e60c508a998923ed5875f91f69cd4f3e77dca19795b976dab016b90"
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -60,123 +60,123 @@
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        "text": [
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        "text": [
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        "text": [
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        "text": [
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-        "<text font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"9.70612\" y=\"-127.91\">!a &amp; !b &amp; c</text>\n",
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+        "<text font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"10.89\" y=\"-141.2\">!a &amp; !b &amp; c</text>\n",
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+        "<ellipse cx=\"111.89\" cy=\"-144\" fill=\"#ffffaa\" rx=\"29.1242\" ry=\"29.3314\" stroke=\"black\"/>\n",
+        "<text font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"107.83\" y=\"-149.6\">1</text>\n",
+        "<text fill=\"#5da5da\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"104.152\" y=\"-132.8\">\u24ff</text>\n",
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-        "<text font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"351.706\" y=\"-127.91\">!a &amp; b &amp; !c</text>\n",
+        "<path d=\"M277.068,-245.829C256.668,-236.978 228.152,-223.837 204.369,-210 182.119,-197.055 158.391,-180.31 140.54,-167.059\" fill=\"none\" stroke=\"black\"/>\n",
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+        "<text font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"204.89\" y=\"-198.2\">!a &amp; b &amp; c</text>\n",
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-        "<text fill=\"#5da5da\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"492.706\" y=\"-15.6701\">\u24ff</text>\n",
+        "<ellipse cx=\"350.89\" cy=\"-30\" fill=\"#ffffaa\" rx=\"29.1242\" ry=\"29.3314\" stroke=\"black\"/>\n",
+        "<text font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"346.83\" y=\"-35.6\">2</text>\n",
+        "<text fill=\"#5da5da\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"343.152\" y=\"-18.8\">\u24ff</text>\n",
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-        "<text font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"555.706\" y=\"-127.91\">a &amp; !b &amp; !c</text>\n",
+        "<path d=\"M322.654,-235.426C328.202,-227.868 333.652,-219.007 336.89,-210 353.943,-162.562 355.038,-103.627 353.531,-66.6503\" fill=\"none\" stroke=\"black\"/>\n",
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+        "<text font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"353.89\" y=\"-141.2\">!a &amp; b &amp; !c</text>\n",
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-        "<text fill=\"#5da5da\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"103.706\" y=\"-120.41\">\u24ff</text>\n",
+        "<ellipse cx=\"461.89\" cy=\"-144\" fill=\"#ffffaa\" rx=\"29.1242\" ry=\"29.3314\" stroke=\"black\"/>\n",
+        "<text font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"457.83\" y=\"-149.6\">3</text>\n",
+        "<text fill=\"#5da5da\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"454.152\" y=\"-132.8\">\u24ff</text>\n",
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         "<!-- 6&#45;&gt;3 -->\n",
         "<g class=\"edge\" id=\"edge17\"><title>6-&gt;3</title>\n",
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-        "<text font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"197.706\" y=\"-180.28\">!a &amp; b &amp; c</text>\n",
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-        "<!-- 4 -->\n",
-        "<g class=\"node\" id=\"node7\"><title>4</title>\n",
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-        "<!-- 6&#45;&gt;4 -->\n",
-        "<g class=\"edge\" id=\"edge18\"><title>6-&gt;4</title>\n",
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-        "<text font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"390.706\" y=\"-180.28\">a &amp; b &amp; !c</text>\n",
+        "<path d=\"M327.544,-240.232C355.55,-220.381 402.203,-187.31 432.501,-165.833\" fill=\"none\" stroke=\"black\"/>\n",
+        "<polygon fill=\"black\" points=\"438.333,-161.699 434.443,-168.317 435.477,-163.723 432.622,-165.747 432.622,-165.747 432.622,-165.747 435.477,-163.723 430.8,-163.177 438.333,-161.699 438.333,-161.699\" stroke=\"black\"/>\n",
+        "<text font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"392.89\" y=\"-198.2\">a &amp; b &amp; !c</text>\n",
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         "<!-- 5 -->\n",
-        "<g class=\"node\" id=\"node8\"><title>5</title>\n",
-        "<ellipse cx=\"235.706\" cy=\"-131.61\" fill=\"#ffffaa\" rx=\"26.7407\" ry=\"26.7407\" stroke=\"black\"/>\n",
-        "<text font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"231.206\" y=\"-135.41\">5</text>\n",
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-        "<text font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"272.706\" y=\"-180.28\">a &amp; !b &amp; c</text>\n",
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+        "<text font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"557.89\" y=\"-141.2\">a &amp; !b &amp; !c</text>\n",
+        "</g>\n",
+        "<!-- 4 -->\n",
+        "<g class=\"node\" id=\"node8\"><title>4</title>\n",
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+        "<!-- 6&#45;&gt;4 -->\n",
+        "<g class=\"edge\" id=\"edge18\"><title>6-&gt;4</title>\n",
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+        "<!-- 1&#45;&gt;0 -->\n",
+        "<g class=\"edge\" id=\"edge3\"><title>1-&gt;0</title>\n",
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+        "<polygon fill=\"black\" points=\"111.89,-59.5 115.04,-66.4999 111.89,-63 111.89,-66.5 111.89,-66.5 111.89,-66.5 111.89,-63 108.74,-66.5 111.89,-59.5 111.89,-59.5\" stroke=\"black\"/>\n",
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+        "<g class=\"edge\" id=\"edge4\"><title>1-&gt;1</title>\n",
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+        "<text font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"158.89\" y=\"-141.2\">b &amp; c</text>\n",
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+        "<!-- 1&#45;&gt;2 -->\n",
+        "<g class=\"edge\" id=\"edge5\"><title>1-&gt;2</title>\n",
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-        "<g class=\"edge\" id=\"edge5\"><title>3-&gt;0</title>\n",
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-        "<spot_impl.tgba_digraph; proxy of <Swig Object of type 'std::shared_ptr< spot::tgba_digraph > *' at 0x7f87301b6ba0> >"
+        "<spot_impl.tgba_digraph; proxy of <Swig Object of type 'std::shared_ptr< spot::tgba_digraph > *' at 0x1052dcba0> >"
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+     "collapsed": false,
+     "input": [
+      "a.is_empty()"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "metadata": {},
+       "output_type": "pyout",
+       "prompt_number": 14,
+       "text": [
+        "False"
+       ]
+      }
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