diff --git a/encoding/jsonschema/constraints_string.go b/encoding/jsonschema/constraints_string.go
index 1c9f1788be8..4da32461120 100644
--- a/encoding/jsonschema/constraints_string.go
+++ b/encoding/jsonschema/constraints_string.go
@@ -67,7 +67,7 @@ var formatFuncs = sync.OnceValue(func() map[string]formatFuncInfo {
 		"byte":                  {openAPI, formatTODO},
 		"data":                  {openAPI, formatTODO},
 		"date":                  {vfrom(VersionDraft7), formatTODO},
-		"date-time ":            {allVersions | openAPI, formatTODO},
+		"date-time":             {allVersions | openAPI, formatTODO},
 		"double":                {openAPI, formatTODO},
 		"duration":              {vfrom(VersionDraft2019_09), formatTODO},
 		"email":                 {allVersions | openAPI, formatTODO},
diff --git a/encoding/jsonschema/testdata/txtar/openapi_date-time.txtar b/encoding/jsonschema/testdata/txtar/openapi_date-time.txtar
index b60f017f0c3..ff696a9513f 100644
--- a/encoding/jsonschema/testdata/txtar/openapi_date-time.txtar
+++ b/encoding/jsonschema/testdata/txtar/openapi_date-time.txtar
@@ -8,6 +8,4 @@ components:
         format: date-time
 
 -- out/decode/extract --
-ERROR:
-unknown format "date-time":
-    schema.yaml:5:9
+#DateTime: string