diff --git a/components/jitclasses/demo/unit1.pas b/components/jitclasses/demo/unit1.pas
index 1b7e64f173..945b5025b6 100644
--- a/components/jitclasses/demo/unit1.pas
+++ b/components/jitclasses/demo/unit1.pas
@@ -267,12 +267,20 @@ begin
 end;
 
 type
-   tmethodnamerec = packed record
+   tmethodnamerec =
+{$if (FPC_FULLVERSION<30301) or NOT defined(FPC_REQUIRES_PROPER_ALIGNMENT)}
+   packed
+{$endif}
+   record
       name : pshortstring;
       addr : codepointer;
    end;
 
-   tmethodnametable = packed record
+   tmethodnametable =
+{$if (FPC_FULLVERSION<30301) or NOT defined(FPC_REQUIRES_PROPER_ALIGNMENT)}
+   packed
+{$endif}
+   record
      count : dword;
      entries : packed array[0..0] of tmethodnamerec;
    end;
diff --git a/designer/jitforms.pp b/designer/jitforms.pp
index a0378d5bc0..cae099d12a 100644
--- a/designer/jitforms.pp
+++ b/designer/jitforms.pp
@@ -386,12 +386,20 @@ const
 type
   // these definitions are copied from typinfo.pp
 
-  TMethodNameRec = packed record
+  TMethodNameRec =
+{$if (FPC_FULLVERSION<30301) or NOT defined(FPC_REQUIRES_PROPER_ALIGNMENT)}
+  packed
+{$endif}
+  record
     Name : PShortString;
     Addr : Pointer;
   end;
 
-  TMethodNameTable = packed record
+  TMethodNameTable =
+{$if (FPC_FULLVERSION<30301) or NOT defined(FPC_REQUIRES_PROPER_ALIGNMENT)}
+  packed
+{$endif}
+  record
     Count : DWord;
     // for runtime range checking it is important to give a range
     Entries : packed array[0..1000000] of TMethodNameRec;
diff --git a/lcl/widgetset/wslclclasses.pp b/lcl/widgetset/wslclclasses.pp
index e090e12304..89de72ce0e 100644
--- a/lcl/widgetset/wslclclasses.pp
+++ b/lcl/widgetset/wslclclasses.pp
@@ -204,12 +204,20 @@ begin
 end;
 
 type
-  TMethodNameTableEntry = packed record
+  TMethodNameTableEntry =
+{$if (FPC_FULLVERSION<30301) or NOT defined(FPC_REQUIRES_PROPER_ALIGNMENT)}
+  packed
+{$endif}
+  record
       Name: PShortstring;
       Addr: Pointer;
     end;
 
-  TMethodNameTable = packed record
+  TMethodNameTable =
+{$if (FPC_FULLVERSION<30301) or NOT defined(FPC_REQUIRES_PROPER_ALIGNMENT)}
+  packed
+{$endif}
+  record
     Count: DWord;
     Entries: packed array[0..9999999] of TMethodNameTableEntry;
   end;