diff --git a/pgjdbc/src/main/java/org/postgresql/PGProperty.java b/pgjdbc/src/main/java/org/postgresql/PGProperty.java
index 342d01e171..3f4cad6724 100644
--- a/pgjdbc/src/main/java/org/postgresql/PGProperty.java
+++ b/pgjdbc/src/main/java/org/postgresql/PGProperty.java
@@ -184,10 +184,10 @@ public enum PGProperty {
 
   GSS_ENC_MODE(
       "gssEncMode",
-      "prefer",
+      "allow",
       "Force Encoded GSS Mode",
       false,
-      new String[] {"disable", "prefer", "require"}
+      new String[] {"disable", "allow", "prefer", "require"}
   ),
 
   /**
diff --git a/pgjdbc/src/main/java/org/postgresql/jdbc/GSSEncMode.java b/pgjdbc/src/main/java/org/postgresql/jdbc/GSSEncMode.java
index a43583f1d5..10367129d0 100644
--- a/pgjdbc/src/main/java/org/postgresql/jdbc/GSSEncMode.java
+++ b/pgjdbc/src/main/java/org/postgresql/jdbc/GSSEncMode.java
@@ -48,7 +48,7 @@ public boolean requireEncryption() {
 
   public static GSSEncMode of(Properties info) throws PSQLException {
     String gssEncMode = PGProperty.GSS_ENC_MODE.get(info);
-    // If gssEncMode is not set, fallback to prefer
+    // If gssEncMode is not set, fallback to allow
     if (gssEncMode == null) {
       return ALLOW;
     }