diff --git a/lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.cpp b/lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.cpp
index b95a2ac13e0..51ffc5246ec 100644
--- a/lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.cpp
+++ b/lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.cpp
@@ -73,6 +73,7 @@ PPCLinuxMCAsmInfo::PPCLinuxMCAsmInfo(bool is64Bit, const Triple& T) {
   ZeroDirective = "\t.space\t";
   Data64bitsDirective = is64Bit ? "\t.quad\t" : nullptr;
   AssemblerDialect = 1;           // New-Style mnemonics.
+  LCOMMDirectiveAlignmentType = LCOMM::ByteAlignment;
 
   if (T.getOS() == llvm::Triple::FreeBSD ||
       (T.getOS() == llvm::Triple::NetBSD && !is64Bit) ||
diff --git a/test/MC/PowerPC/lcomm.s b/test/MC/PowerPC/lcomm.s
new file mode 100644
index 00000000000..b6beedea5fd
--- /dev/null
+++ b/test/MC/PowerPC/lcomm.s
@@ -0,0 +1,22 @@
+# RUN: llvm-mc -triple powerpc-unknown-unknown -filetype=obj %s | \
+# RUN: llvm-readobj -s -sd | FileCheck %s
+# RUN: llvm-mc -triple powerpc64-unknown-unknown -filetype=obj %s | \
+# RUN: llvm-readobj -s -sd | FileCheck %s
+
+.lcomm foo, 16, 16
+
+// CHECK:        Section {
+// CHECK:          Name: .bss
+// CHECK-NEXT:     Type: SHT_NOBITS
+// CHECK-NEXT:     Flags [
+// CHECK-NEXT:       SHF_ALLOC
+// CHECK-NEXT:       SHF_WRITE
+// CHECK-NEXT:     ]
+// CHECK-NEXT:     Address: 0x0
+// CHECK-NEXT:     Offset: 0x40
+// CHECK-NEXT:     Size: 16
+// CHECK-NEXT:     Link: 0
+// CHECK-NEXT:     Info: 0
+// CHECK-NEXT:     AddressAlignment: 16
+// CHECK-NEXT:     EntrySize: 0
+// CHECK-NEXT:     SectionData (