diff --git a/lldb/source/API/SBData.cpp b/lldb/source/API/SBData.cpp
index 40bd71e90b7f..a58585295a21 100644
--- a/lldb/source/API/SBData.cpp
+++ b/lldb/source/API/SBData.cpp
@@ -7,6 +7,8 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include <inttypes.h> // PRIu64
+
 #include "lldb/API/SBData.h"
 #include "lldb/API/SBError.h"
 #include "lldb/API/SBStream.h"
diff --git a/lldb/source/API/SBFileSpec.cpp b/lldb/source/API/SBFileSpec.cpp
index e5a3f6deb479..2a93e9530e26 100644
--- a/lldb/source/API/SBFileSpec.cpp
+++ b/lldb/source/API/SBFileSpec.cpp
@@ -7,6 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include <inttypes.h> // PRIu64
 #include <limits.h>
 
 #include "lldb/API/SBFileSpec.h"
diff --git a/lldb/source/Plugins/Process/Utility/RegisterContextDarwin_x86_64.cpp b/lldb/source/Plugins/Process/Utility/RegisterContextDarwin_x86_64.cpp
index 433782fe20c0..bc6aeee27c78 100644
--- a/lldb/source/Plugins/Process/Utility/RegisterContextDarwin_x86_64.cpp
+++ b/lldb/source/Plugins/Process/Utility/RegisterContextDarwin_x86_64.cpp
@@ -9,6 +9,7 @@
 
 
 // C Includes
+#include <inttypes.h> // PRIx64
 #include <stdarg.h>
 #include <stddef.h>  // offsetof