diff --git a/.gitattributes b/.gitattributes
index 17ab65025e..0b4361a6c3 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -7239,6 +7239,7 @@ tests/webtbs/tw7104.pp svneol=native#text/plain
 tests/webtbs/tw7143.pp -text
 tests/webtbs/tw7161.pp svneol=native#text/plain
 tests/webtbs/tw7195.pp svneol=native#text/plain
+tests/webtbs/tw7227.pp svneol=native#text/plain
 tests/webtbs/ub1873.pp svneol=native#text/plain
 tests/webtbs/ub1883.pp svneol=native#text/plain
 tests/webtbs/uw0555.pp svneol=native#text/plain
diff --git a/compiler/defcmp.pas b/compiler/defcmp.pas
index b5f1aecc16..5efea4b529 100644
--- a/compiler/defcmp.pas
+++ b/compiler/defcmp.pas
@@ -586,8 +586,11 @@ implementation
 
            arraydef :
              begin
-             { open array is also compatible with a single element of its base type }
+               { open array is also compatible with a single element of its base type.
+                 the extra check for deftyp is needed because equal defs can also return
+                 true if the def types are not the same, for example with dynarray to pointer. }
                if is_open_array(def_to) and
+                  (def_to.deftype=tarraydef(def_to).elementtype.def.deftype) and
                   equal_defs(def_from,tarraydef(def_to).elementtype.def) then
                 begin
                   doconv:=tc_equal;
diff --git a/tests/webtbs/tw7227.pp b/tests/webtbs/tw7227.pp
new file mode 100644
index 0000000000..22a86f8d3f
--- /dev/null
+++ b/tests/webtbs/tw7227.pp
@@ -0,0 +1,33 @@
+
+program openarray;
+{$ifdef fpc}{$mode delphi}{$endif}
+type
+ PDouble = ^Double;
+
+function CheckValues(values : array of PDouble) : boolean;
+var i : integer;
+begin
+ Result := True;
+ for i := Low(values) to High(values) do
+  if values[i]^ = 0 then
+    Result := False;
+end;
+
+var values : array of PDouble;
+    i : integer;
+begin
+ SetLength(values, 5);
+ for i := 0 to High(values) do
+ begin
+  New(values[i]);
+  values[i]^ := i+1;
+ end;
+
+ for i := 0 to High(values) do
+   writeln(values[i]^);
+
+ if CheckValues(values) then
+   WriteLn('OK')
+ else
+   writeln('not OK');
+end.