diff --git a/dap4/src/main/java/dap4/dap4lib/cdm/nc2/DapNetcdfFile.java b/dap4/src/main/java/dap4/dap4lib/cdm/nc2/DapNetcdfFile.java
index b0388f5be5..ca8166ac45 100644
--- a/dap4/src/main/java/dap4/dap4lib/cdm/nc2/DapNetcdfFile.java
+++ b/dap4/src/main/java/dap4/dap4lib/cdm/nc2/DapNetcdfFile.java
@@ -130,7 +130,7 @@ public DapNetcdfFile(String location, CancelTask cancelTask) throws IOException
     }
     // We need to convert the protocol to #dap4
     if ("dap4".equalsIgnoreCase(xuri.getScheme())) {
-      xuri.setScheme("http"); // Note that this should be https, but
+      xuri.setScheme("https"); // Note that this should be https, but
                               // test.opendap.org still uses http; one
                               // hopes that other servers are setup to
                               // redirect http: to https: