diff --git a/notebooks/wasm-engines.ipynb b/notebooks/wasm-engines.ipynb
index d01b569..385f409 100644
--- a/notebooks/wasm-engines.ipynb
+++ b/notebooks/wasm-engines.ipynb
@@ -2358,7 +2358,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "plt_fig = plotThreeTestsExecTime(df_interp, blake2b_test_names, '../images/wasm-interp-blake2b-exec.png', title=\"wasm interpreters compared - blake2b\")"
+    "plotThreeTestsExecTime(df_interp, blake2b_test_names, '../images/wasm-interp-blake2b-exec.png', title=\"wasm interpreters compared - blake2b\")"
    ]
   },
   {
@@ -5945,7 +5945,7 @@
    "source": [
     "\n",
     "# test to make  sure that scout wasm3 data is present\n",
-    "test_scout_wasm3_plot = plotOneTestColoredTicks(df_scout_data[df_scout_data['engine'].isin(['wasm3-with-bignums'])],\n",
+    "plotOneTestColoredTicks(df_scout_data[df_scout_data['engine'].isin(['wasm3-with-bignums'])],\n",
     "                                               '../images/.scout_wasm3_test1_png')\n"
    ]
   },
@@ -5957,7 +5957,7 @@
    "source": [
     "\n",
     "# test to make sure that scout_wamr.c data is present\n",
-    "test_scout_wasm3_plot = plotOneTestColoredTicks(df_scout_data[df_scout_data['engine'].isin(['wasm3-with-bignums'])],\n",
+    "plotOneTestColoredTicks(df_scout_data[df_scout_data['engine'].isin(['wasm3-with-bignums'])],\n",
     "                                               '../images/.scout_wasm3_test2_png')\n"
    ]
   },
diff --git a/notebooks/wasm-engines.py b/notebooks/wasm-engines.py
index aa708e6..27d2b71 100644
--- a/notebooks/wasm-engines.py
+++ b/notebooks/wasm-engines.py
@@ -1843,7 +1843,7 @@ def plotThreeTestsExecTime(df_testdata, three_names, filepath, title="Title", fi
 # In[ ]:
 
 
-plt_fig = plotThreeTestsExecTime(df_interp, blake2b_test_names, '../images/wasm-interp-blake2b-exec.png', title="wasm interpreters compared - blake2b")
+plotThreeTestsExecTime(df_interp, blake2b_test_names, '../images/wasm-interp-blake2b-exec.png', title="wasm interpreters compared - blake2b")
 
 
 # In[ ]:
@@ -4622,7 +4622,7 @@ def plotTimeVsGas(df_benchdata, filepath, title=""):
 
 
 # test to make  sure that scout wasm3 data is present
-test_scout_wasm3_plot = plotOneTestColoredTicks(df_scout_data[df_scout_data['engine'].isin(['wasm3-with-bignums'])],
+plotOneTestColoredTicks(df_scout_data[df_scout_data['engine'].isin(['wasm3-with-bignums'])],
                                                '../images/.scout_wasm3_test1_png')
 
 
@@ -4631,7 +4631,7 @@ def plotTimeVsGas(df_benchdata, filepath, title=""):
 
 
 # test to make sure that scout_wamr.c data is present
-test_scout_wasm3_plot = plotOneTestColoredTicks(df_scout_data[df_scout_data['engine'].isin(['wasm3-with-bignums'])],
+plotOneTestColoredTicks(df_scout_data[df_scout_data['engine'].isin(['wasm3-with-bignums'])],
                                                '../images/.scout_wasm3_test2_png')