diff --git a/include/wx/isql.h b/include/wx/isql.h
index e36c7cf679..3ddfdaf70a 100644
--- a/include/wx/isql.h
+++ b/include/wx/isql.h
@@ -61,6 +61,7 @@ typedef short int SWORD;
 typedef unsigned long int UDWORD;
 typedef unsigned short int UWORD;
 typedef long SQLINTEGER;
+typedef UDWORD SQLUINTEGER;
 
 typedef void FAR *PTR;
 typedef void FAR *HENV;
diff --git a/src/iodbc/isql.h b/src/iodbc/isql.h
index e3658afd30..87b599b477 100644
--- a/src/iodbc/isql.h
+++ b/src/iodbc/isql.h
@@ -48,6 +48,7 @@ typedef short int SWORD;
 typedef unsigned long int UDWORD;
 typedef unsigned short int UWORD;
 typedef long SQLINTEGER;
+typedef UDWORD SQLUINTEGER;
 
 typedef void FAR *PTR;
 typedef void FAR *HENV;