diff --git a/internal/myks/application.go b/internal/myks/application.go
index 1b5e01b1..77e81768 100644
--- a/internal/myks/application.go
+++ b/internal/myks/application.go
@@ -75,7 +75,7 @@ func (a *Application) Init() error {
 
 	a.collectDataFiles()
 
-	dataYaml, err := a.renderDataYaml(append(a.e.g.extraYttPaths, a.yttDataFiles...))
+	dataYaml, err := a.renderDataYaml(concatenate(a.e.g.extraYttPaths, a.yttDataFiles))
 	if err != nil {
 		return err
 	}
@@ -179,7 +179,7 @@ func (a *Application) ytt(step, purpose string, paths []string, args ...string)
 }
 
 func (a *Application) yttS(step string, purpose string, paths []string, stdin io.Reader, args ...string) (CmdResult, error) {
-	paths = append(a.e.g.extraYttPaths, paths...)
+	paths = concatenate(a.e.g.extraYttPaths, paths)
 	return runYttWithFilesAndStdin(paths, stdin, func(name string, args []string) {
 		log.Debug().Msg(a.Msg(step, msgRunCmd(purpose, name, args)))
 	}, args...)
diff --git a/internal/myks/environment.go b/internal/myks/environment.go
index 587e5f74..40f21400 100644
--- a/internal/myks/environment.go
+++ b/internal/myks/environment.go
@@ -313,7 +313,7 @@ func (e *Environment) ytt(purpose string, paths []string, args ...string) (CmdRe
 }
 
 func (e *Environment) yttS(purpose string, paths []string, stdin io.Reader, args ...string) (CmdResult, error) {
-	paths = append(e.g.extraYttPaths, paths...)
+	paths = concatenate(e.g.extraYttPaths, paths)
 	return runYttWithFilesAndStdin(paths, stdin, func(name string, args []string) {
 		log.Debug().Msg(e.Msg(msgRunCmd(purpose, name, args)))
 	}, args...)
diff --git a/internal/myks/render.go b/internal/myks/render.go
index cf583b4c..712901e0 100644
--- a/internal/myks/render.go
+++ b/internal/myks/render.go
@@ -179,7 +179,7 @@ func (a *Application) prepareValuesFile(dirName string, resourceName string) (st
 		return "", nil
 	}
 
-	resourceValuesYaml, err := a.ytt(renderStepName, "collect data values file", append(a.yttDataFiles, valuesFiles...))
+	resourceValuesYaml, err := a.ytt(renderStepName, "collect data values file", concatenate(a.yttDataFiles, valuesFiles))
 	if err != nil {
 		log.Warn().Err(err).Msg(a.Msg(renderStepName, "Unable to render resource values templates"))
 		return "", err
diff --git a/internal/myks/util.go b/internal/myks/util.go
index 9f5a0c58..40a453a5 100644
--- a/internal/myks/util.go
+++ b/internal/myks/util.go
@@ -295,3 +295,12 @@ func extract[T any](items []T, filterFunc func(cf T) bool) []T {
 	}
 	return result
 }
+
+// Concatenates multiple slices of the same type together creating a new underlying array
+func concatenate[T any](slices ...[]T) []T {
+	result := []T{}
+	for _, slice := range slices {
+		result = append(result, slice...)
+	}
+	return result
+}