diff --git a/pkg/engine/funcs.go b/pkg/engine/funcs.go
index ba842a51a..4ff8f5dd0 100644
--- a/pkg/engine/funcs.go
+++ b/pkg/engine/funcs.go
@@ -150,6 +150,7 @@ func fromYAMLArray(str string) []any {
 
 // toTOML takes an interface, marshals it to toml, and returns a string. It will
 // always return a string, even on marshal error (empty string).
+// Errors are swallowed, consistent with toYAML and toJSON behavior.
 //
 // This is designed to be called from a template.
 func toTOML(v any) string {
@@ -157,7 +158,8 @@ func toTOML(v any) string {
 	e := toml.NewEncoder(b)
 	err := e.Encode(v)
 	if err != nil {
-		return err.Error()
+		// Swallow errors inside of a template.
+		return ""
 	}
 	return b.String()
 }
diff --git a/pkg/engine/funcs_test.go b/pkg/engine/funcs_test.go
index 48202454e..362aeabfd 100644
--- a/pkg/engine/funcs_test.go
+++ b/pkg/engine/funcs_test.go
@@ -122,6 +122,12 @@ keyInElement1 = "valueInElement1"`,
 		tpl:    `{{ fromYamlArray . }}`,
 		expect: `[error unmarshaling JSON: while decoding JSON: json: cannot unmarshal object into Go value of type []interface {}]`,
 		vars:   `hello: world`,
+	}, {
+		// toToml should swallow errors and return "" like toYaml and toJson do.
+		// map[int]string cannot be encoded as TOML (keys must be strings).
+		tpl:    `{{ toToml . }}`,
+		expect: ``,
+		vars:   map[int]string{1: "one"},
 	}, {
 		// This should never result in a network lookup. Regression for #7955
 		tpl:    `{{ lookup "v1" "Namespace" "" "unlikelynamespace99999999" }}`,