diff --git a/api/filters/patchstrategicmerge/patchstrategicmerge_test.go b/api/filters/patchstrategicmerge/patchstrategicmerge_test.go
index 044a5a86e..0bcd951c0 100644
--- a/api/filters/patchstrategicmerge/patchstrategicmerge_test.go
+++ b/api/filters/patchstrategicmerge/patchstrategicmerge_test.go
@@ -852,7 +852,7 @@ metadata:
   name: blabla
   namespace: blabla-ns
 data:
-  "6443": "key-double-quoted"
+  "6443": "foobar"
 `,
 			patch: yaml.MustParse(`
 apiVersion: v1
@@ -861,7 +861,7 @@ metadata:
   name: blabla
   namespace: blabla-ns
 data:
-  6443: "key as int"
+  "6443": "barfoo"
   '9110': "foo-foo"
 `),
 			expected: `
@@ -871,8 +871,38 @@ metadata:
   name: blabla
   namespace: blabla-ns
 data:
-  "6443": "key as int"
+  "6443": "barfoo"
   '9110': "foo-foo"
+`,
+		},
+
+		"different key types": {
+			input: `
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: blabla
+  namespace: blabla-ns
+data:
+  "6443": "key-string-double-quoted"
+`,
+			patch: yaml.MustParse(`
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: blabla
+  namespace: blabla-ns
+data:
+  6443: "key-int"
+`),
+			expected: `
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: blabla
+  namespace: blabla-ns
+data:
+  "6443": "key-int"
 `,
 		},
 	}