diff --git a/soundcard/pulseaudio.py b/soundcard/pulseaudio.py
index 3f7db9a..e34ee95 100644
--- a/soundcard/pulseaudio.py
+++ b/soundcard/pulseaudio.py
@@ -111,7 +111,10 @@ def _infer_program_name():
         import sys
         prog_name = sys.argv[0]
         if prog_name == "-c":
-            return sys.argv[1][:30] + "..."
+            if len(sys.argv) > 1:
+                return sys.argv[1][:30] + "..."
+            else:
+                return "..."
         if prog_name == "-m":
             prog_name = sys.argv[1]
         # Usually even with -m, sys.argv[0] will already be a path,