diff --git a/notebooks/NIRISS_WFSS_postpipeline/01_Combine_and_normalize_1D_spectra.ipynb b/notebooks/NIRISS_WFSS_postpipeline/01_Combine_and_normalize_1D_spectra.ipynb
index 747cdb192..fe9d1eb5e 100755
--- a/notebooks/NIRISS_WFSS_postpipeline/01_Combine_and_normalize_1D_spectra.ipynb
+++ b/notebooks/NIRISS_WFSS_postpipeline/01_Combine_and_normalize_1D_spectra.ipynb
@@ -405,7 +405,7 @@
     "        flux_err_combine[ii] = np.sqrt(np.sum(flux_err[:, ii]**2)) / len(flux_err[:, ii])\n",
     "\n",
     "    # Normalize;\n",
-    "    filt_data = ascii.read(f'{DIR_FIL}/NIRISS_{filt.upper()}.txt'\n",
+    "    filt_data = ascii.read(f'{DIR_FIL}/NIRISS_{filt.upper()}.txt')\n",
     "    wave_filt = filt_data['Wavelength']\n",
     "    flux_filt = filt_data['FilterTrans']\n",
     "\n",
@@ -555,7 +555,7 @@
     "    con = (wave > mask_lw[ff]) & (wave < mask_uw[ff])\n",
     "    plt.plot(wave[con], flux[con], ls='-', label=f'{grism} {filts[ff]}', color=cols[ff])\n",
     "\n",
-    "    filt_data = ascii.read(f'{DIR_FIL}/NIRISS_{filt.upper()}.txt'\n",
+    "    filt_data = ascii.read(f'{DIR_FIL}/NIRISS_{filt.upper()}.txt')\n",
     "    wave_filt = filt_data['Wavelength']\n",
     "    flux_filt = filt_data['FilterTrans']\n",
     "\n",
@@ -587,7 +587,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.11.6"
   }
  },
  "nbformat": 4,