diff --git a/source/blender/src/buttons_scene.c b/source/blender/src/buttons_scene.c
index c0ba5469c9a..7c361b6113d 100644
--- a/source/blender/src/buttons_scene.c
+++ b/source/blender/src/buttons_scene.c
@@ -1206,7 +1206,7 @@ static void seq_panel_proxy()
 			uiDefBut(block, TEX, 
 				 B_SEQ_BUT_RELOAD, "Dir: ", 
 				 30,120,220,20, last_seq->strip->proxy->dir, 
-				 0.0, (float)sizeof(last_seq->strip->proxy->dir), 100, 0, "");
+				 0.0, (float)sizeof(last_seq->strip->proxy->dir)-1, 100, 0, "");
 		}
 		if (last_seq->flag & SEQ_USE_PROXY_CUSTOM_FILE) {
 			uiDefIconBut(block, BUT, B_SEQ_SEL_PROXY_FILE, 
@@ -1218,7 +1218,7 @@ static void seq_panel_proxy()
 			uiDefBut(block, TEX, 
 				 B_SEQ_BUT_RELOAD, "File: ", 
 				 30,100,220,20, last_seq->strip->proxy->file, 
-				 0.0, (float)sizeof(last_seq->strip->proxy->file), 100, 0, "");
+				 0.0, (float)sizeof(last_seq->strip->proxy->file)-1, 100, 0, "");
 		}
 	}