1 files changed, 3 insertions, 4 deletions
diff --git a/Source/JavaScriptCore/debugger/DebuggerPrimitives.h b/Source/JavaScriptCore/debugger/DebuggerPrimitives.h
index 635a5bfe8..959f8bd14 100644
--- a/Source/JavaScriptCore/debugger/DebuggerPrimitives.h
+++ b/Source/JavaScriptCore/debugger/DebuggerPrimitives.h
@@ -23,8 +23,9 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
  */
 
-#ifndef DebuggerPrimitives_h
-#define DebuggerPrimitives_h
+#pragma once
+
+#include <stddef.h>
 
 namespace JSC {
 
@@ -35,5 +36,3 @@ typedef size_t BreakpointID;
 static const BreakpointID noBreakpointID = 0;
 
 } // namespace JSC
-
-#endif // DebuggerPrimitives_h