diff --git a/src/net/sourceforge/plantuml/FileFormat.java b/src/net/sourceforge/plantuml/FileFormat.java
index 84167ff51..ff5cfd63c 100644
--- a/src/net/sourceforge/plantuml/FileFormat.java
+++ b/src/net/sourceforge/plantuml/FileFormat.java
@@ -109,8 +109,8 @@ public enum FileFormat {
 		if (this == MJPEG)
 			return ".avi";
 
-		if (this == LATEX_NO_PREAMBLE)
-			return ".latex";
+		if (this == LATEX || this == LATEX_NO_PREAMBLE)
+			return ".tex";
 
 		if (this == ANIMATED_GIF)
 			return ".gif";