diff --git a/.gitattributes b/.gitattributes
index c04d8105e4..a24c03eb63 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -15913,6 +15913,7 @@ tests/webtbs/tw3235.pp svneol=native#text/plain
 tests/webtbs/tw3235a.pp svneol=native#text/plain
 tests/webtbs/tw3241a.pp svneol=native#text/plain
 tests/webtbs/tw32474.pp svneol=native#text/pascal
+tests/webtbs/tw32510.pp svneol=native#text/plain
 tests/webtbs/tw3252.pp svneol=native#text/plain
 tests/webtbs/tw3255.pp svneol=native#text/plain
 tests/webtbs/tw3257.pp svneol=native#text/plain
diff --git a/compiler/ngenutil.pas b/compiler/ngenutil.pas
index 19da58fc57..aaff1b8754 100644
--- a/compiler/ngenutil.pas
+++ b/compiler/ngenutil.pas
@@ -676,6 +676,7 @@ implementation
     var
       size: asizeint;
       trashintval: int64;
+      stringres: tstringconstnode;
     begin
       if trashable_sym(p) then
         begin
@@ -695,12 +696,19 @@ implementation
           if is_managed_type(p.vardef) then
             begin
               if is_string(p.vardef) then
-                trash_small(stat,trashn,
-                  cstringconstnode.createstr(
-                    'uninitialized function result in '+
-                    tprocdef(p.owner.defowner).customprocname([pno_proctypeoption, pno_paranames,pno_ownername, pno_noclassmarker])
-                  )
-                )
+                begin
+                  stringres:=
+                    cstringconstnode.createstr(
+                      'uninitialized function result in '+
+                      tprocdef(p.owner.defowner).customprocname([pno_proctypeoption, pno_paranames,pno_ownername, pno_noclassmarker])
+                    );
+                  { prevent attempts to convert the string to the specified
+                    code page at compile time, as it may not be available (and
+                    it does not matter) }
+                  if is_ansistring(p.vardef) then
+                    stringres.changestringtype(search_system_type('RAWBYTESTRING').typedef);
+                  trash_small(stat,trashn,stringres);
+                end
               else
                 internalerror(2016030601);
             end
diff --git a/tests/webtbs/tw32510.pp b/tests/webtbs/tw32510.pp
new file mode 100644
index 0000000000..c874fcf479
--- /dev/null
+++ b/tests/webtbs/tw32510.pp
@@ -0,0 +1,18 @@
+{ %norun }
+
+unit tw32510;
+interface
+
+type
+  RawUnicode = type AnsiString(1200);
+
+function AnsiToRawUnicode(const AnsiText: RawByteString): RawUnicode;
+
+implementation
+
+function AnsiToRawUnicode(const AnsiText: RawByteString): RawUnicode;
+begin
+end;
+
+initialization
+end.