diff --git a/licensecheck/packageinfo.py b/licensecheck/packageinfo.py
index 4b3b391..fc099d8 100644
--- a/licensecheck/packageinfo.py
+++ b/licensecheck/packageinfo.py
@@ -118,7 +118,7 @@ def get_package_info(self, package: PackageInfo) -> PackageInfo:
 				return pkg_info
 
 			tokens = sorted(parsed.literals)
-			pkg_info.license = ucstr(JOINS.join(x.key for x in tokens))
+			pkg_info.license = ucstr(JOINS.join(getattr(x, "key", str(x)) for x in tokens))
 
 		return pkg_info
 
diff --git a/tests/data/issue_137.txt b/tests/data/issue_137.txt
new file mode 100644
index 0000000..562b895
--- /dev/null
+++ b/tests/data/issue_137.txt
@@ -0,0 +1 @@
+llvmlite==0.46.0