diff --git a/run_scapy_py2 b/run_scapy_py2
index 4e992334d..7276e2a15 100755
--- a/run_scapy_py2
+++ b/run_scapy_py2
@@ -1,3 +1,3 @@
 #! /bin/sh
 PYTHON=python2
-source $(dirname $0)/run_scapy "$@"
+. $(dirname $0)/run_scapy "$@"
diff --git a/run_scapy_py3 b/run_scapy_py3
index 946eb149f..6f983c7a7 100755
--- a/run_scapy_py3
+++ b/run_scapy_py3
@@ -1,3 +1,3 @@
 #! /bin/sh
 PYTHON=python3
-source $(dirname $0)/run_scapy "$@"
+. $(dirname $0)/run_scapy "$@"