diff --git a/src/sccala/asynphot/aks_correction.py b/src/sccala/asynphot/aks_correction.py
index 47e9cc2..382e3d9 100644
--- a/src/sccala/asynphot/aks_correction.py
+++ b/src/sccala/asynphot/aks_correction.py
@@ -267,7 +267,10 @@ def aks_correction(
     aks_corr_phot, aks_corr_phot_err
     """
 
-    matplotlib.use("TkAgg")
+    try:
+        matplotlib.use("TkAgg")
+    except ImportError:
+        pass
     # SN data
     a_v, z_hel, mjd_explo = get_sn_info(snname, modelpath=modelpath)
 
diff --git a/src/sccala/interplib/epoch_interp.py b/src/sccala/interplib/epoch_interp.py
index 8ec174d..6b58960 100644
--- a/src/sccala/interplib/epoch_interp.py
+++ b/src/sccala/interplib/epoch_interp.py
@@ -12,7 +12,10 @@
 )
 from sccala.utillib.aux import convert_to_flux, convert_to_mag
 
-matplotlib.use("TkAgg")
+try:
+    matplotlib.use("TkAgg")
+except ImportError:
+    pass
 
 
 class EpochDataSet: