diff --git a/var/spack/repos/builtin/packages/llvm-doe/package.py b/var/spack/repos/builtin/packages/llvm-doe/package.py
index 0af4a2b0f2f..23523616a24 100644
--- a/var/spack/repos/builtin/packages/llvm-doe/package.py
+++ b/var/spack/repos/builtin/packages/llvm-doe/package.py
@@ -251,7 +251,7 @@ def determine_variants(cls, exes, version_str):
                 compilers['c'] = exe
             elif 'flang' in exe:
                 variants.append('+flang')
-                compiler['fc'] = exe
+                compilers['fc'] = exe
                 compilers['f77'] = exe
             elif 'ld.lld' in exe:
                 lld_found = True