diff --git a/src/system/kernel/debug/system_profiler.cpp b/src/system/kernel/debug/system_profiler.cpp
index d1674ad556..e3174159f2 100644
--- a/src/system/kernel/debug/system_profiler.cpp
+++ b/src/system/kernel/debug/system_profiler.cpp
@@ -701,6 +701,7 @@ void*
 SystemProfiler::_AllocateBuffer(size_t size, int event, int cpu, int count,
 	bool threadsLocked)
 {
+	size = (size + 3) / 4 * 4;
 	size += sizeof(system_profiler_event_header);
 
 	size_t end = fBufferStart + fBufferSize;