diff --git a/changelog.d/rustcfml-reportaslucee-detection.fixed.md b/changelog.d/rustcfml-reportaslucee-detection.fixed.md
new file mode 100644
index 000000000..44827d3a4
--- /dev/null
+++ b/changelog.d/rustcfml-reportaslucee-detection.fixed.md
@@ -0,0 +1 @@
+- Engine detection now recognizes RustCFML v0.507+ running in its default `reportAsLucee` mode (where `server.coldfusion.productName` reports "Lucee") by matching the stable `server.lucee.versionName == "RustCFML"` identity marker, so the dedicated RustCFML engine adapter is selected instead of the Lucee adapter and adapter-gated behavior (image-info support, capability probes, engine version gates) routes correctly again.
diff --git a/vendor/wheels/events/onapplicationstart.cfc b/vendor/wheels/events/onapplicationstart.cfc
index ac58622d0..ad3c01f9f 100644
--- a/vendor/wheels/events/onapplicationstart.cfc
+++ b/vendor/wheels/events/onapplicationstart.cfc
@@ -538,6 +538,14 @@ component {
 	 * branch or RustCFML is misclassified as Lucee and its dedicated engine
 	 * adapter becomes dead code. Other probe-verified RustCFML markers:
 	 * server.java.vendor = "RustCFML (no JVM)".
+	 *
+	 * As of RustCFML v0.507.0, reportAsLucee defaults to true: the productName
+	 * marker reports "Lucee" (with Lucee's productVersion) and the real engine
+	 * version moves to server.lucee.version behind a Lucee-major prefix
+	 * ("7.0.519.0" means RustCFML 0.519.0). The one field upstream documents
+	 * as the stable identity marker — their own isRustCFML() BIF keys on it —
+	 * is server.lucee.versionName == "RustCFML", so that branch must also run
+	 * BEFORE the Lucee branch.
 	 */
 	public struct function $detectEngine(required struct serverScope) {
 		local.rv = {};
@@ -551,6 +559,14 @@ component {
 		) {
 			local.rv.serverName = "RustCFML";
 			local.rv.serverVersion = arguments.serverScope.coldfusion.productVersion;
+		} else if (
+			StructKeyExists(arguments.serverScope, "lucee")
+			&& StructKeyExists(arguments.serverScope.lucee, "versionName")
+			&& arguments.serverScope.lucee.versionName == "RustCFML"
+		) {
+			local.rv.serverName = "RustCFML";
+			// Strip the impersonated Lucee major ("7.0.519.0" -> "0.519.0").
+			local.rv.serverVersion = ListRest(arguments.serverScope.lucee.version, ".");
 		} else if (StructKeyExists(arguments.serverScope, "lucee")) {
 			local.rv.serverName = "Lucee";
 			local.rv.serverVersion = arguments.serverScope.lucee.version;
diff --git a/vendor/wheels/tests/specs/engineAdapterSpec.cfc b/vendor/wheels/tests/specs/engineAdapterSpec.cfc
index 22225db79..3b7521a4b 100644
--- a/vendor/wheels/tests/specs/engineAdapterSpec.cfc
+++ b/vendor/wheels/tests/specs/engineAdapterSpec.cfc
@@ -203,10 +203,28 @@ component extends="wheels.WheelsTest" {
 				expect(detected.serverVersion).toBe("0.417.0");
 			});
 
+			it("resolves RustCFML under reportAsLucee impersonation (v0.507+) via the versionName marker", function() {
+				// As of RustCFML v0.507.0 reportAsLucee defaults to true:
+				// productName reports "Lucee" with Lucee's productVersion, and
+				// the real engine version hides behind a Lucee-major prefix in
+				// server.lucee.version. The stable identity marker upstream
+				// documents (and keys its own isRustCFML() on) is
+				// server.lucee.versionName == "RustCFML".
+				var events = CreateObject("component", "wheels.events.onapplicationstart");
+				var fakeServer = {
+					lucee: {version: "7.0.519.0", versionName: "RustCFML"},
+					coldfusion: {productName: "Lucee", productVersion: "2016,0,03,300357"},
+					java: {vendor: "RustCFML (no JVM)"}
+				};
+				var detected = events.$detectEngine(serverScope = fakeServer);
+				expect(detected.serverName).toBe("RustCFML");
+				expect(detected.serverVersion).toBe("0.519.0");
+			});
+
 			it("resolves Lucee when server.lucee exists without the RustCFML product marker", function() {
 				var events = CreateObject("component", "wheels.events.onapplicationstart");
 				var fakeServer = {
-					lucee: {version: "6.2.0.321"},
+					lucee: {version: "6.2.0.321", versionName: "Gelert"},
 					coldfusion: {productName: "Lucee", productVersion: "6.2.0.321"}
 				};
 				var detected = events.$detectEngine(serverScope = fakeServer);