diff --git a/var/spack/repos/builtin/packages/python/package.py b/var/spack/repos/builtin/packages/python/package.py
index 15133baea39..8033c52b91b 100644
--- a/var/spack/repos/builtin/packages/python/package.py
+++ b/var/spack/repos/builtin/packages/python/package.py
@@ -206,8 +206,7 @@ def python_ignore(self, ext_pkg, args):
         if ext_pkg.name != 'py-pygments':
             patterns.append(r'bin/pygmentize$')
         if ext_pkg.name != 'py-numpy':
-            patterns.append(r'bin/f2py$')
-            patterns.append(r'bin/f2py3$')
+            patterns.append(r'bin/f2py3?$')
 
         return match_predicate(ignore_arg, patterns)