2 files changed, 7 insertions, 4 deletions

diff --git a/music_sampler/music_sampler.kv b/music_sampler/music_sampler.kv
index 839d2ce..55df12c 100644
--- a/music_sampler/music_sampler.kv
+++ b/music_sampler/music_sampler.kv
@@ -30,15 +30,15 @@
       rgba: self.line_color
     Line:
       rounded_rectangle: self.x + self.line_width, self.y + self.line_width, self.width - 2 * self.line_width, self.height - 2 * self.line_width, 10
-      width: self.line_width
+      width: self.line_width or 2
     Color:
       rgba: self.line_cross_color
     Line:
       points: self.x + self.line_width + 3, self.y + self.line_width + 3, self.x + self.width - 2 * self.line_width - 3, self.y + self.height - 2 * self.line_width - 3
-      width: self.line_width
+      width: self.line_width or 2
     Line:
       points: self.x + self.line_width + 3, self.y + self.height - 2 * self.line_width - 3, self.x + self.width - 2 * self.line_width - 3, self.y + self.line_width + 3
-      width: self.line_width
+      width: self.line_width or 2
   Label:
     id: key_label
     font_name: "Ubuntu"
diff --git a/music_sampler/sysfont.py b/music_sampler/sysfont.py
index 7bb518e..cdb3bf3 100644
--- a/music_sampler/sysfont.py
+++ b/music_sampler/sysfont.py
@@ -141,7 +141,10 @@ def _cache_fonts_fontconfig():
 
         # family and styles
         family = values[1].strip().lower()
-        stylevals = values[2].strip()
+        if len(values) > 2:
+            stylevals = values[2].strip()
+        else:
+            stylevals = ""
         style = STYLE_NONE
 
         if stylevals.find("Bold") >= 0: