diff --git a/src/Microsoft.Tye.Core/KubernetesManifestGenerator.cs b/src/Microsoft.Tye.Core/KubernetesManifestGenerator.cs
index 9d755c50..a4060abb 100644
--- a/src/Microsoft.Tye.Core/KubernetesManifestGenerator.cs
+++ b/src/Microsoft.Tye.Core/KubernetesManifestGenerator.cs
@@ -229,7 +229,7 @@ namespace Microsoft.Tye
                                             { "secretKeyRef", new YamlMappingNode()
                                                 {
                                                     { "name", new YamlScalarNode(binding.Name) { Style = ScalarStyle.SingleQuoted } },
-                                                    { "key", new YamlScalarNode("connectionString") { Style = ScalarStyle.SingleQuoted } },
+                                                    { "key", new YamlScalarNode("connectionstring") { Style = ScalarStyle.SingleQuoted } },
                                                 }
                                             },
                                         }
diff --git a/test/E2ETest/testassets/generate/generate-connectionstring-dependency.yaml b/test/E2ETest/testassets/generate/generate-connectionstring-dependency.yaml
index 493d932e..3552b04d 100644
--- a/test/E2ETest/testassets/generate/generate-connectionstring-dependency.yaml
+++ b/test/E2ETest/testassets/generate/generate-connectionstring-dependency.yaml
@@ -29,7 +29,7 @@ spec:
           valueFrom:
             secretKeyRef:
               name: 'binding-production-dependency-secret'
-              key: 'connectionString'
+              key: 'connectionstring'
         ports:
         - containerPort: 80
 ...