diff --git a/src/p_mach.cpp b/src/p_mach.cpp
index ed5b421f..48fc1e32 100644
--- a/src/p_mach.cpp
+++ b/src/p_mach.cpp
@@ -169,7 +169,7 @@ static const signed char lc_cmd_size[] = {
     P(0x2f /*LC_VERSION_MIN_TVOS*/, 16), // sizeof(Mach32_version_min_command)
     P(0x30 /*LC_VERSION_MIN_WATCHOS*/, 16), // sizeof(Mach32_version_min_command)
     P(0x31 /*LC_NOTE*/, -40), // sizeof(note_command) + data
-    P(0x32 /*LC_BUILD_VERSION*/, 16), // sizeof(Mach32_source_version_command)
+    P(0x32 /*LC_BUILD_VERSION*/, -24), // sizeof(Mach32_build_version_command) + N*2*4
     P(0x33 /*lo(LC_DYLD_EXPORTS_TRIE)*/, 16), // sizeof(linkedit_data_command)
     P(0x34 /*lo(LC_DYLD_CHAINED_FIXUPS)*/, 16), // sizeof(linkedit_data_command)
     P(0x35 /*lo(LC_FILESET_ENTRY)*/, -32), // sizeof(fileset_entry_command) + ???
diff --git a/src/p_mach_enum.h b/src/p_mach_enum.h
index 54afcde8..77e162bd 100644
--- a/src/p_mach_enum.h
+++ b/src/p_mach_enum.h
@@ -108,6 +108,11 @@
         LC_VERSION_MIN_TVOS= 0x2F,
         LC_VERSION_MIN_WATCHOS= 0x30,
         LC_NOTE           = 0x31,
+        LC_BUILD_VERSION  = 0x32,  // minimum; size 6*4 + N*2*4
+        LC_DYLD_EXPORTS_TRIE   = (0x33|LC_REQ_DYLD),  // size 4*4
+        LC_DYLD_CHAINED_FIXUPS = (0x34|LC_REQ_DYLD),  // size 4*4
+        LC_FILESET_ENTRY       = (0x35|LC_REQ_DYLD),  // size 6*4
+
     };
 
     enum { // maxprot