diff --git a/proteus-openapi/src/main/java/io/sinistral/proteus/openapi/services/OpenAPIService.java b/proteus-openapi/src/main/java/io/sinistral/proteus/openapi/services/OpenAPIService.java
index db4be96..781bd66 100644
--- a/proteus-openapi/src/main/java/io/sinistral/proteus/openapi/services/OpenAPIService.java
+++ b/proteus-openapi/src/main/java/io/sinistral/proteus/openapi/services/OpenAPIService.java
@@ -319,7 +319,7 @@ public RoutingHandler get()
 		/*
 		 * YAML path
 		 */
-		String pathTemplate = this.applicationPath + File.separator + this.specFilename;
+		String pathTemplate = this.applicationPath + "/" + this.specFilename;
 
 		FileResourceManager resourceManager = new FileResourceManager(this.resourcePath.toFile(), 1024);