diff --git a/llvm/include/llvm/Object/MachO.h b/llvm/include/llvm/Object/MachO.h
index 71c835cc01662..8442df10e752f 100644
--- a/llvm/include/llvm/Object/MachO.h
+++ b/llvm/include/llvm/Object/MachO.h
@@ -608,7 +608,7 @@ class MachOObjectFile : public ObjectFile {
     case MachO::PLATFORM_TVOS: return "tvos";
     case MachO::PLATFORM_WATCHOS: return "watchos";
     case MachO::PLATFORM_BRIDGEOS: return "bridgeos";
-    case MachO::PLATFORM_MACCATALYST: return "maccatalyst";
+    case MachO::PLATFORM_MACCATALYST: return "macCatalyst";
     case MachO::PLATFORM_IOSSIMULATOR: return "iossimulator";
     case MachO::PLATFORM_TVOSSIMULATOR: return "tvossimulator";
     case MachO::PLATFORM_WATCHOSSIMULATOR: return "watchossimulator";
diff --git a/llvm/test/MC/MachO/darwin-version-min-load-command.s b/llvm/test/MC/MachO/darwin-version-min-load-command.s
index 2567686e8738d..100faac04f823 100644
--- a/llvm/test/MC/MachO/darwin-version-min-load-command.s
+++ b/llvm/test/MC/MachO/darwin-version-min-load-command.s
@@ -37,7 +37,7 @@
 
 // CHECK-MACCATALYST:           cmd LC_BUILD_VERSION
 // CHECK-MACCATALYST-NEXT:  cmdsize 24
-// CHECK-MACCATALYST-NEXT: platform maccatalyst
+// CHECK-MACCATALYST-NEXT: platform macCatalyst
 // CHECK-MACCATALYST-NEXT:      sdk n/a
 // CHECK-MACCATALYST-NEXT:    minos 13.0
 // CHECK-MACCATALYST-NEXT:   ntools 0
diff --git a/llvm/test/tools/llvm-objdump/X86/macho-maccatalyst-build-version.yaml b/llvm/test/tools/llvm-objdump/X86/macho-maccatalyst-build-version.yaml
index 4d2f5d6dddf11..b143aea31fab1 100644
--- a/llvm/test/tools/llvm-objdump/X86/macho-maccatalyst-build-version.yaml
+++ b/llvm/test/tools/llvm-objdump/X86/macho-maccatalyst-build-version.yaml
@@ -49,6 +49,6 @@ LoadCommands:
 CHECK: Load command 1
 CHECK-NEXT:       cmd LC_BUILD_VERSION
 CHECK-NEXT:   cmdsize 32
-CHECK-NEXT:  platform maccatalyst
+CHECK-NEXT:  platform macCatalyst
 CHECK-NEXT:       sdk 9.0
 CHECK-NEXT:     minos 13.0