diff --git a/.gitattributes b/.gitattributes
index 0ed3a5db8d..f2f976ccfe 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -10102,6 +10102,7 @@ tests/webtbs/tw14958b.pp svneol=native#text/plain
 tests/webtbs/tw1501.pp svneol=native#text/plain
 tests/webtbs/tw15088.pp svneol=native#text/plain
 tests/webtbs/tw15169.pp svneol=native#text/plain
+tests/webtbs/tw15207.pp svneol=native#text/plain
 tests/webtbs/tw1532.pp svneol=native#text/plain
 tests/webtbs/tw1539.pp svneol=native#text/plain
 tests/webtbs/tw1567.pp svneol=native#text/plain
diff --git a/compiler/nld.pas b/compiler/nld.pas
index fef4f901a8..cc1b742189 100644
--- a/compiler/nld.pas
+++ b/compiler/nld.pas
@@ -1104,6 +1104,7 @@ implementation
         inherited ppuload(t,ppufile);
         ppufile.getderef(rttidefderef);
         rttitype:=trttitype(ppufile.getbyte);
+        rttidatatype:=trttidatatype(ppufile.getbyte);
       end;
 
 
@@ -1112,6 +1113,7 @@ implementation
         inherited ppuwrite(ppufile);
         ppufile.putderef(rttidefderef);
         ppufile.putbyte(byte(rttitype));
+        ppufile.putbyte(byte(rttidatatype));
       end;
 
 
@@ -1136,6 +1138,7 @@ implementation
          n:=trttinode(inherited dogetcopy);
          n.rttidef:=rttidef;
          n.rttitype:=rttitype;
+         n.rttidatatype:=rttidatatype;
          result:=n;
       end;
 
diff --git a/compiler/ppu.pas b/compiler/ppu.pas
index 3897effddd..e1ac0f7439 100644
--- a/compiler/ppu.pas
+++ b/compiler/ppu.pas
@@ -43,7 +43,7 @@ type
 {$endif Test_Double_checksum}
 
 const
-  CurrentPPUVersion = 105;
+  CurrentPPUVersion = 106;
 
 { buffer sizes }
   maxentrysize = 1024;
diff --git a/tests/webtbs/tw15207.pp b/tests/webtbs/tw15207.pp
new file mode 100644
index 0000000000..855a26881f
--- /dev/null
+++ b/tests/webtbs/tw15207.pp
@@ -0,0 +1,27 @@
+program testinline;
+
+{$mode objfpc}{$H+}
+
+type
+  enumtest = (e1, e2);
+
+function Test: Boolean; inline;
+var
+  e: enumtest;
+  s: String;
+begin
+  e := e1;
+  WriteStr(s, e);
+  result:=s='e1';
+end;
+
+procedure TestProc;
+begin
+  if not Test then
+    halt(1);
+end;
+
+begin
+  TestProc;
+end.
+