diff --git a/run_skyvern.sh b/run_skyvern.sh
index 259d2df6..fe20dac4 100755
--- a/run_skyvern.sh
+++ b/run_skyvern.sh
@@ -1,6 +1,9 @@
 #!/bin/bash
 
-kill $(lsof -t -i :8000)
+pid=$(lsof -t -i :8000)
+if [ ! -z "$pid" ]; then
+  kill $pid
+fi
 
 if [ ! -f .env ]; then
   cp .env.example .env
diff --git a/run_ui.sh b/run_ui.sh
index ad755957..267cb220 100755
--- a/run_ui.sh
+++ b/run_ui.sh
@@ -1,6 +1,9 @@
 #!/bin/bash
 
-kill $(lsof -t -i :8080)
+pid=$(lsof -t -i :8080)
+if [ ! -z "$pid" ]; then
+  kill $pid
+fi
 
 cd skyvern-frontend