diff --git a/setup.py b/setup.py
index 1d70caad..c72f64ff 100644
--- a/setup.py
+++ b/setup.py
@@ -364,7 +364,7 @@ ext_modules = [
     Extension("Crypto.Cipher._raw_eksblowfish",
         include_dirs=['src/'],
         define_macros=[('EKS',None),],
-        sources=["src/blowfish.c"]),
+        sources=["src/blowfish_eks.c"]),
     Extension("Crypto.Cipher._raw_cast",
         include_dirs=['src/'],
         sources=["src/CAST.c"]),
@@ -427,7 +427,7 @@ ext_modules = [
     # Math
     Extension("Crypto.Math._modexp",
         include_dirs=['src/'],
-        sources=['src/modexp.c', 'src/siphash.c', 'src/modexp_utils.c', 'src/mont.c'],
+        sources=['src/modexp.c', 'src/siphash.c', 'src/modexp_utils.c', 'src/mont_math.c'],
         ),
 ]