diff --git a/font-patcher b/font-patcher
index c16a67f..ac72ece 100755
--- a/font-patcher
+++ b/font-patcher
@@ -6,7 +6,7 @@
 from __future__ import absolute_import, print_function, unicode_literals
 
 # Change the script version when you edit this script:
-script_version = "4.14.3"
+script_version = "4.14.4"
 
 version = "3.2.1"
 projectName = "Nerd Fonts"
@@ -2127,6 +2127,9 @@ def main():
 
     sourceFonts = []
     all_fonts = fontforge.fontsInFile(args.font)
+    if not all_fonts:
+        logger.critical("Can not find any fonts in '%s'", args.font)
+        sys.exit(1)
     for i, subfont in enumerate(all_fonts):
         if len(all_fonts) > 1:
           print("\n")