diff --git a/rulesets/src/naming.ruleset.yml b/rulesets/src/naming.ruleset.yml
index cf91ade..9186a40 100644
--- a/rulesets/src/naming.ruleset.yml
+++ b/rulesets/src/naming.ruleset.yml
@@ -42,18 +42,18 @@ rules:
 
   ##### Domain References #####
   sps-ref-property-name:
-    description: Property with the name 'ref' MUST be of type 'sps-ref' following URN-like reference formats.
+    description: Property with the name 'ref' MUST use a format 'sps-ref'.
     severity: error
     formats: [oas3]
     given: '$..properties..[?((@property=== "ref" || @property === "Ref") && @.$ref == null && @.allOf == null && @.oneOf == null && @.type != null)]'
     resolved: false
     then:
-      - field: "format"
+      - field: format
         function: truthy
-      - field: "format"
+      - field: format
         function: pattern
         functionOptions:
-          match: "sps-ref"
+          match: "^sps-ref$"
 
   sps-ref-schema:
     description: Properties following 'sps-ref' format MUST use the standardized schema - maxLength (255), minLength(7), pattern (includes 'sps'), type (string).
diff --git a/rulesets/test/naming/sps-ref-property-name.test.js b/rulesets/test/naming/sps-ref-property-name.test.js
index d90c23e..c61cca3 100644
--- a/rulesets/test/naming/sps-ref-property-name.test.js
+++ b/rulesets/test/naming/sps-ref-property-name.test.js
@@ -100,4 +100,58 @@ describe("sps-ref-property-name", () => {
         `;
         await spectral.validateSuccess(spec, ruleName);
     });
+
+    test("Ref property fails with format containing 'sps-ref' but not exact match", async () => {
+        const spec = `
+        openapi: 3.0.1
+        paths: {}
+        components:
+            schemas:
+                MySchema:
+                    type: object
+                    properties:
+                        ref:
+                            type: string
+                            format: custom-sps-ref
+                        value:
+                            type: string
+        `;
+        await spectral.validateFailure(spec, ruleName, "Error");
+    });
+
+    test("Ref property fails with format 'sps-ref-extended'", async () => {
+        const spec = `
+        openapi: 3.0.1
+        paths: {}
+        components:
+            schemas:
+                MySchema:
+                    type: object
+                    properties:
+                        ref:
+                            type: string
+                            format: sps-ref-extended
+                        value:
+                            type: string
+        `;
+        await spectral.validateFailure(spec, ruleName, "Error");
+    });
+
+    test("Ref property fails with format 'my-sps-ref'", async () => {
+        const spec = `
+        openapi: 3.0.1
+        paths: {}
+        components:
+            schemas:
+                MySchema:
+                    type: object
+                    properties:
+                        ref:
+                            type: string
+                            format: my-sps-ref
+                        value:
+                            type: string
+        `;
+        await spectral.validateFailure(spec, ruleName, "Error");
+    });
 });