diff --git a/src/nginx/nginx.go b/src/nginx/nginx.go
index 2339201..c646365 100644
--- a/src/nginx/nginx.go
+++ b/src/nginx/nginx.go
@@ -16,14 +16,14 @@ func getNginxDirectories(filename string, m Config) (string, string) {
 	return pathAvailable, pathEnabled
 }
 
-func CreateOrUpdateServerBlock(filename string, content string, m Config, markers map[string]string) (string, error) {
+func CreateOrUpdateServerBlock(filename string, content string, m Config, markers map[string]interface{}) (string, error) {
 	fullPathAvailable, _ := getNginxDirectories(filename, m)
 
 	// Replace markers in content
 	var re *regexp.Regexp
 	for key, value := range markers {
 		re, _ = regexp.Compile("{#\\s*" + key + "\\s*#}")
-		content = re.ReplaceAllString(content, value)
+		content = re.ReplaceAllString(content, value.(string))
 	}
 
 	if err := ioutil.WriteFile(fullPathAvailable, []byte(content), 0744); err != nil {
diff --git a/src/resource_server_block.go b/src/resource_server_block.go
index bed0904..aac41ca 100644
--- a/src/resource_server_block.go
+++ b/src/resource_server_block.go
@@ -49,7 +49,7 @@ func resourceServerBlockCreate(d *schema.ResourceData, m interface{}) error {
 
 	// Create file
 	content := d.Get("content").(string)
-	fullPathAvailable, err := nginx.CreateOrUpdateServerBlock(d.Get("filename").(string), content, config, d.Get("markers").(map[string]string))
+	fullPathAvailable, err := nginx.CreateOrUpdateServerBlock(d.Get("filename").(string), content, config, d.Get("markers").(map[string]interface{}))
 	if err != nil {
 		return err
 	}
@@ -82,7 +82,7 @@ func resourceServerBlockRead(d *schema.ResourceData, m interface{}) error {
 func resourceServerBlockUpdate(d *schema.ResourceData, m interface{}) error {
 	// Content changed: replace old file content
 	if d.HasChange("content") || d.HasChange("variables") {
-		_, err := nginx.CreateOrUpdateServerBlock(d.Id(), d.Get("content").(string), m.(nginx.Config), d.Get("markers").(map[string]string))
+		_, err := nginx.CreateOrUpdateServerBlock(d.Id(), d.Get("content").(string), m.(nginx.Config), d.Get("markers").(map[string]interface{}))
 		if err != nil {
 			return err
 		}