diff --git a/tests/pySim-trace_test.sh b/tests/pySim-trace_test.sh
index 0ec5e0f8..40c5db68 100755
--- a/tests/pySim-trace_test.sh
+++ b/tests/pySim-trace_test.sh
@@ -1,4 +1,4 @@
-#/bin/bash
+#!/bin/bash
 
 PYSIM_TRACE=../pySim-trace.py
 GSMTAP_TRACE=pySim-trace_test_gsmtap.pcapng