diff --git a/src/ffx/file_properties.py b/src/ffx/file_properties.py
index d8ac319..b72563e 100644
--- a/src/ffx/file_properties.py
+++ b/src/ffx/file_properties.py
@@ -219,7 +219,7 @@ class FileProperties():
         """
 
         # ffmpeg -i <input.file> -vf cropdetect -f null -
-        ffprobeOutput, ffprobeError, returnCode = executeProcess(["ffmpeg" "-i",
+        ffprobeOutput, ffprobeError, returnCode = executeProcess(["ffmpeg", "-i",
                                                         self.__sourcePath,
                                                         "-vf", "cropdetect",
                                                         "-t", "180",