diff --git a/internal/app/xhttp/handler.go b/internal/app/xhttp/handler.go
index e15f6443..92cf22ea 100644
--- a/internal/app/xhttp/handler.go
+++ b/internal/app/xhttp/handler.go
@@ -338,9 +338,9 @@ func convertAsync(ctx context.Context, p printer.Printer, filename, fpath string
 		}
 		req.Header.Set(echo.HeaderContentType, "application/pdf")
 		// set custom headers (if any).
-		customHeaders := resource.WebhookURLCustomHTTPHeaders(r)
-		if len(customHeaders) > 0 {
-			for key, value := range customHeaders {
+		customHTTPHeaders := resource.WebhookURLCustomHTTPHeaders(r)
+		if len(customHTTPHeaders) > 0 {
+			for key, value := range customHTTPHeaders {
 				req.Header.Set(key, value)
 				logger.DebugfOp(op, "set '%s' to custom HTTP header '%s'", value, key)
 			}
diff --git a/internal/pkg/printer/chrome.go b/internal/pkg/printer/chrome.go
index 71e16b32..10337fab 100644
--- a/internal/pkg/printer/chrome.go
+++ b/internal/pkg/printer/chrome.go
@@ -261,13 +261,13 @@ func (p chromePrinter) setCustomHTTPHeaders(ctx context.Context, client *cdp.Cli
 			p.logger.DebugOp(op, "skipping custom HTTP headers as none have been provided...")
 			return nil
 		}
-		customHeaders := make(map[string]string)
+		customHTTPHeaders := make(map[string]string)
 		// useless but for the logs.
 		for key, value := range p.opts.CustomHTTPHeaders {
-			customHeaders[key] = value
+			customHTTPHeaders[key] = value
 			p.logger.DebugfOp(op, "set '%s' to custom HTTP header '%s'", value, key)
 		}
-		b, err := json.Marshal(customHeaders)
+		b, err := json.Marshal(customHTTPHeaders)
 		if err != nil {
 			return err
 		}