diff --git a/macho-go/pkg/ios/macho/lc_segment.go b/macho-go/pkg/ios/macho/lc_segment.go
index 96632e9..46967f2 100644
--- a/macho-go/pkg/ios/macho/lc_segment.go
+++ b/macho-go/pkg/ios/macho/lc_segment.go
@@ -190,7 +190,7 @@ func (lcmd *Segment64) Vmaddr() uint64 {
 	return lcmd.vmaddr
 }
 func (lcmd *Segment64) Vmsize() uint64 {
-	return lcmd.vmaddr
+	return lcmd.vmsize
 }
 func (lcmd *Segment64) Fileoff() uint64 {
 	return lcmd.fileoff