diff --git a/src/main/java/net/sourceforge/plantuml/servlet/OldProxyServlet.java b/src/main/java/net/sourceforge/plantuml/servlet/OldProxyServlet.java
index 2259c3b..9aeecc5 100644
--- a/src/main/java/net/sourceforge/plantuml/servlet/OldProxyServlet.java
+++ b/src/main/java/net/sourceforge/plantuml/servlet/OldProxyServlet.java
@@ -110,6 +110,12 @@ public class OldProxyServlet extends HttpServlet {
         if (format.equals("svg")) {
             return FileFormat.SVG;
         }
+        if (format.equals("eps")) {
+            return FileFormat.EPS;
+        }
+        if (format.equals("epstext")) {
+            return FileFormat.EPS_TEXT;
+        }
         if (format.equals("txt")) {
             return FileFormat.ATXT;
         }
diff --git a/src/main/java/net/sourceforge/plantuml/servlet/ProxyServlet.java b/src/main/java/net/sourceforge/plantuml/servlet/ProxyServlet.java
index 1460d25..c124122 100644
--- a/src/main/java/net/sourceforge/plantuml/servlet/ProxyServlet.java
+++ b/src/main/java/net/sourceforge/plantuml/servlet/ProxyServlet.java
@@ -122,6 +122,12 @@ public class ProxyServlet extends HttpServlet {
         if (format.equals("svg")) {
             return FileFormat.SVG;
         }
+        if (format.equals("eps")) {
+            return FileFormat.EPS;
+        }
+        if (format.equals("epstext")) {
+            return FileFormat.EPS_TEXT;
+        }
         if (format.equals("txt")) {
             return FileFormat.UTXT;
         }