diff --git a/include/begin_code.h b/include/begin_code.h
index 133c6c158..b5d4e66b7 100644
--- a/include/begin_code.h
+++ b/include/begin_code.h
@@ -59,14 +59,19 @@
    packing set to an alternate value, say for loading structures from disk.
    The packing is reset to the previous value in close_code.h
  */
-#if defined(_MSC_VER) || defined(__MWERKS__) || defined(__WATCOMC__) || defined(__BORLANDC__)
+#if defined(_MSC_VER) || defined(__MWERKS__) || defined(__WATCOMC__) || defined(__BORLANDC__) || defined(__APPLE__)
 #ifdef _MSC_VER
 #pragma warning(disable: 4103)
 #endif
 #ifdef __BORLANDC__
 #pragma nopackwarning
 #endif
+#if (defined(__MWERKS__) && defined(macintosh))
+#pragma options align=mac68k4byte
+#pragma enumsalwaysint on
+#else
 #pragma pack(push,4)
+#endif
 #endif /* Compiler needs structure packing set */
 
 /* Set up compiler-specific options for inlining functions */
diff --git a/include/close_code.h b/include/close_code.h
index 0a3044f00..d3b5c07e8 100644
--- a/include/close_code.h
+++ b/include/close_code.h
@@ -31,6 +31,11 @@
 #ifdef __BORLANDC__
 #pragma nopackwarning
 #endif
+#if (defined(__MWERKS__) && defined(macintosh))
+#pragma options align=reset
+#pragma enumsalwaysint reset
+#else
 #pragma pack(pop)
+#endif
 #endif /* Compiler needs structure packing set */