diff --git a/sysb/init b/sysb/init
index e0ca338..69204d8 100755
--- a/sysb/init
+++ b/sysb/init
@@ -43,4 +43,4 @@ PREFIX=${PREFIX}
 SOURCES=${SOURCES}
 EOF
 
-exec ./run.sh
+exec env -i bash run.sh
diff --git a/sysc/init b/sysc/init
index f434c9c..8a8b99f 100755
--- a/sysc/init
+++ b/sysc/init
@@ -81,4 +81,4 @@ MAKEJOBS=${MAKEJOBS}
 INTERNAL_CI=${INTERNAL_CI}
 EOF
 
-exec ./run.sh
+exec env -i bash run.sh