diff --git a/var/spack/repos/builtin/packages/llvm-doe/package.py b/var/spack/repos/builtin/packages/llvm-doe/package.py
index 7937124d75e..d3a91114ad5 100644
--- a/var/spack/repos/builtin/packages/llvm-doe/package.py
+++ b/var/spack/repos/builtin/packages/llvm-doe/package.py
@@ -252,6 +252,8 @@ def determine_version(cls, exe):
             output = compiler("--version", output=str, error=str)
             if "Apple" in output:
                 return None
+            if "AMD" in output:
+                return None
             match = version_regex.search(output)
             if match:
                 return match.group(match.lastindex)
diff --git a/var/spack/repos/builtin/packages/llvm/package.py b/var/spack/repos/builtin/packages/llvm/package.py
index a4a89f17bc6..df1aa7c86b2 100644
--- a/var/spack/repos/builtin/packages/llvm/package.py
+++ b/var/spack/repos/builtin/packages/llvm/package.py
@@ -597,6 +597,8 @@ def determine_version(cls, exe):
             output = compiler("--version", output=str, error=str)
             if "Apple" in output:
                 return None
+            if "AMD" in output:
+                return None
             match = version_regex.search(output)
             if match:
                 return match.group(match.lastindex)