diff --git a/reference/pdo_4d/sqltypes.xml b/reference/pdo_4d/sqltypes.xml
index a23b6b8c24..fe0e9c7e52 100644
--- a/reference/pdo_4d/sqltypes.xml
+++ b/reference/pdo_4d/sqltypes.xml
@@ -98,12 +98,12 @@
        <row>
         <entry>REAL</entry>
         <entry>REAL</entry>
-        <entry></entry>
+        <entry>Unsupported (use VARCHAR conversion)</entry>
        </row>
        <row>
         <entry>FLOAT</entry>
         <entry>FLOAT</entry>
-        <entry>Unsupported</entry>
+        <entry>Unsupported (use VARCHAR conversion)</entry>
        </row>
        <row>
         <entry>DOUBLE PRECISION</entry>