diff --git a/src/erlsom.erl b/src/erlsom.erl
index 8abe2cf..673c003 100644
--- a/src/erlsom.erl
+++ b/src/erlsom.erl
@@ -141,7 +141,7 @@ compile_xsd_file(XsdFile, Options) ->
 %% xml2struct.erl
 %%----------------------------------------------------------------------
 compile(Xsd) ->
-  compile_xsd(Xsd, [{prefix, "p"}]).
+  compile_xsd(Xsd, [{prefix, "ns1"}]).
 
 compile(Xsd, Prefix) ->
   compile_xsd(Xsd, [{prefix, Prefix}]).
@@ -150,7 +150,7 @@ compile(Xsd, Prefix, Namespaces) ->
   compile_xsd(Xsd, [{prefix, Prefix}, {namespaces, Namespaces}]).
 
 compile_file(XsdFile) ->
-  compile_file(XsdFile, "p").
+  compile_file(XsdFile, "ns1").
 
 compile_file(XsdFile, Prefix) ->
   compile_file(XsdFile, Prefix, []).
@@ -399,7 +399,7 @@ write_xsd_hrl_file(Xsd, Output, Options) ->
   end.
 
 write_hrl_file(Xsd, Output) ->
-  write_hrl_file(Xsd, "p", [], Output).
+  write_hrl_file(Xsd, "ns1", [], Output).
 
 write_hrl_file(Xsd, Prefix, Output) ->
   write_hrl_file(Xsd, Prefix, [], Output).
diff --git a/src/erlsom_lib.erl b/src/erlsom_lib.erl
index fcca13b..b46ef78 100644
--- a/src/erlsom_lib.erl
+++ b/src/erlsom_lib.erl
@@ -263,7 +263,7 @@ findPrefix2(Namespace, Namespaces) ->
     {value, #ns{prefix = Prefix}} ->
       Prefix;
     _Else ->
-      "P"
+      "ns1"
   end.
 
 makeTypeName(Name, Prefix) ->