Index: ELF/SyntheticSections.cpp
===================================================================
--- ELF/SyntheticSections.cpp
+++ ELF/SyntheticSections.cpp
@@ -316,7 +316,7 @@
 }
 
 BuildIdSection::BuildIdSection()
-    : SyntheticSection(SHF_ALLOC, SHT_NOTE, 1, ".note.gnu.build-id"),
+    : SyntheticSection(SHF_ALLOC, SHT_NOTE, 4, ".note.gnu.build-id"),
       HashSize(getHashSize()) {}
 
 void BuildIdSection::writeTo(uint8_t *Buf) {