diff --git a/functions/scaling/isprime-go-concurrency.yml b/functions/scaling/isprime-go-concurrency.yml
index a7e1afc..e0d2baa 100644
--- a/functions/scaling/isprime-go-concurrency.yml
+++ b/functions/scaling/isprime-go-concurrency.yml
@@ -21,4 +21,4 @@ spec:
         - image: tormachris/isprime-go
           env:
             - name: TARGET
-              value: 107107
+              value: "107107"
diff --git a/functions/scaling/isprime-go.yml b/functions/scaling/isprime-go.yml
index 02237e3..b4228a5 100644
--- a/functions/scaling/isprime-go.yml
+++ b/functions/scaling/isprime-go.yml
@@ -15,4 +15,4 @@ spec:
         - image: tormachris/isprime-go
           env:
             - name: TARGET
-              value: 107107
+              value: "107107"
diff --git a/functions/simple/isprime-go.yml b/functions/simple/isprime-go.yml
index 77c6a90..ab55aa1 100644
--- a/functions/simple/isprime-go.yml
+++ b/functions/simple/isprime-go.yml
@@ -10,4 +10,4 @@ spec:
         - image: "tormachris/isprime-go"
           env:
             - name: TARGET
-              value: 107107
+              value: "107107"
diff --git a/functions/simple/isprime-py.yml b/functions/simple/isprime-py.yml
index d4211cc..14e905c 100644
--- a/functions/simple/isprime-py.yml
+++ b/functions/simple/isprime-py.yml
@@ -10,4 +10,4 @@ spec:
         - image: "tormachris/isprime-py"
           env:
             - name: TARGET
-              value: 107107
+              value: "107107"