diff --git a/dust_extinction/shapes.py b/dust_extinction/shapes.py
index ee1c3d0..8847208 100644
--- a/dust_extinction/shapes.py
+++ b/dust_extinction/shapes.py
@@ -97,7 +97,7 @@ def _curve_F99_method(
 
     # FM90 model and values
     if fm90_version == "B3":
-        fm90_model = FM90(C1=C1, C2=C2, B3=bump_param, C4=C4, xo=xo, gamma=gamma)
+        fm90_model = FM90_B3(C1=C1, C2=C2, B3=bump_param, C4=C4, xo=xo, gamma=gamma)
     else:
         fm90_model = FM90(C1=C1, C2=C2, C3=bump_param, C4=C4, xo=xo, gamma=gamma)
     # evaluate model and get results in A(x)/A(V)
diff --git a/dust_extinction/tests/test_corvals.py b/dust_extinction/tests/test_corvals.py
index e11e0e4..1b5af11 100644
--- a/dust_extinction/tests/test_corvals.py
+++ b/dust_extinction/tests/test_corvals.py
@@ -60,7 +60,7 @@
         "atol": 4e-3,
         # from Fitzpatrick (1999) Table 3
         # keep optical from Fitzpatrick (1999),
-        # replce NIR with Fitzpatrick (2004) function for Rv=3.1:
+        # replace NIR with Fitzpatrick (2004) function for Rv=3.1:
         # (0.63*3.1 - 0.84)*x**1.84
     },
     M14: {