diff --git a/texttools.tcl b/texttools.tcl
index 04b1df8..a5dd028 100755
--- a/texttools.tcl
+++ b/texttools.tcl
@@ -38,6 +38,7 @@ lappend transforms [list {Markdown Quote} markdown_quote]
 
 wm geometry . 750x650
 wm title . "Text Tools"
+wm resizable . false false
 
 text .content
 text .output