diff --git a/lib/spack/spack/compilers/gcc.py b/lib/spack/spack/compilers/gcc.py
index 3f552eaecec..2fae6688db9 100644
--- a/lib/spack/spack/compilers/gcc.py
+++ b/lib/spack/spack/compilers/gcc.py
@@ -77,9 +77,9 @@ def fc_version(cls, fc):
         return get_compiler_version(
             fc, '-dumpversion',
             # older gfortran versions don't have simple dumpversion output.
-            r'(?:GNU Fortran \(GCC\))?(\d+\.\d+(?:\.\d+)?)', module)
+            r'(?:GNU Fortran \(GCC\))?(\d+\.\d+(?:\.\d+)?)')
 
 
     @classmethod
     def f77_version(cls, f77):
-        return cls.fc_version(f77, module)
+        return cls.fc_version(f77)