diff --git a/asltk/reconstruction.py b/asltk/reconstruction.py
index d8980af..676b825 100644
--- a/asltk/reconstruction.py
+++ b/asltk/reconstruction.py
@@ -389,7 +389,7 @@ def mod_2comp(Xdata, par1):
                                 bounds=(lb, ub),
                             )
                             self._t1blgm_map[k, j, i] = par_fit[0]
-                        except RuntimeError:
+                        except RuntimeError:   # pragma: no cover
                             self._t1blgm_map[k, j, i] = 0.0
 
         # Adjusting output image boundaries
@@ -532,10 +532,10 @@ def create_map(
             # If the CBF/ATT maps are zero (empty), then a new one is created
             print(
                 '[blue][INFO] The CBF/ATT map were not provided. Creating these maps before next step...'
-            )
-            basic_maps = self._basic_maps.create_map()
-            self._cbf_map = basic_maps['cbf']
-            self._att_map = basic_maps['att']
+            )   # pragma: no cover
+            basic_maps = self._basic_maps.create_map()   # pragma: no cover
+            self._cbf_map = basic_maps['cbf']   # pragma: no cover
+            self._att_map = basic_maps['att']   # pragma: no cover
 
         x_axis = self._asl_data('m0').shape[2]   # height
         y_axis = self._asl_data('m0').shape[1]   # width
diff --git a/asltk/utils.py b/asltk/utils.py
index b27ec09..52ea824 100644
--- a/asltk/utils.py
+++ b/asltk/utils.py
@@ -134,7 +134,7 @@ def asl_model_buxton(
                     * math.exp(-att / t1b)
                     * math.exp(-(t[i] - tau[i] - att) / t1bp)
                 )
-        except OverflowError:
+        except OverflowError:   # pragma: no cover
             m_values[i] = 0.0
 
     return m_values
@@ -361,7 +361,7 @@ def asl_model_multi_te(
                 Scsf = S1b * (1 - math.exp(-te[i] / tblcsf)) * math.exp(
                     -te[i] / t2csf
                 ) + S1csf * math.exp(-te[i] / t2csf)
-        except (OverflowError, RuntimeError):
+        except (OverflowError, RuntimeError):   # pragma: no cover
             Sb = 0.0
             Scsf = 0.0
 
@@ -380,7 +380,7 @@ def asl_model_multi_dw(
             mag_total[i] = A1 * math.exp(-b_values[i] * D1) + A2 * math.exp(
                 -b_values[i] * D2
             )
-        except (OverflowError, RuntimeError):
+        except (OverflowError, RuntimeError):   # pragma: no cover
             mag_total[i] = 0.0
 
     return mag_total