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-rw-r--r--stsci/sphere/vector.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/stsci/sphere/vector.py b/stsci/sphere/vector.py
index bb444e6..f13b9e7 100644
--- a/stsci/sphere/vector.py
+++ b/stsci/sphere/vector.py
@@ -44,6 +44,7 @@ import numpy as np
try:
from . import math_util
+ import math_util
HAS_C_UFUNCS = True
except ImportError:
HAS_C_UFUNCS = False