diff --git a/normalizer_test.go b/normalizer_test.go
index b10942d..8d72c28 100644
--- a/normalizer_test.go
+++ b/normalizer_test.go
@@ -449,8 +449,8 @@ func TestNormalizer_NormalizeBase(t *testing.T) {
 		},
 		{
 			// escaped characters in base (1)
-			Base:     `file:///c:/base (x86)/Spec.json`,
-			Expected: `file:///c:/base%20%28x86%29/Spec.json`,
+			Base:     `file:///c:/base (x86)/spec.json`,
+			Expected: `file:///c:/base%20%28x86%29/spec.json`,
 		},
 	} {
 		testCase := toPin