diff --git a/pgjdbc/src/main/java/org/postgresql/jdbc/TypeInfoCache.java b/pgjdbc/src/main/java/org/postgresql/jdbc/TypeInfoCache.java
index e946df2144..23652327f0 100644
--- a/pgjdbc/src/main/java/org/postgresql/jdbc/TypeInfoCache.java
+++ b/pgjdbc/src/main/java/org/postgresql/jdbc/TypeInfoCache.java
@@ -128,7 +128,7 @@ public class TypeInfoCache implements TypeInfo {
     TYPE_ALIASES.put("long", "int8");
     TYPE_ALIASES.put("int8", "int8");
     TYPE_ALIASES.put("bigint", "int8");
-    TYPE_ALIASES.put("float", "float4");
+    TYPE_ALIASES.put("float", "float8");
     TYPE_ALIASES.put("float4", "float4");
     TYPE_ALIASES.put("double", "float8");
     TYPE_ALIASES.put("float8", "float8");