diff --git a/src/core/Tools.cpp b/src/core/Tools.cpp
index 47a0df03..6877e5c8 100644
--- a/src/core/Tools.cpp
+++ b/src/core/Tools.cpp
@@ -47,8 +47,8 @@
 #endif
 
 #ifdef HAVE_PT_DENY_ATTACH
-#include <sys/ptrace.h>
 #include <sys/types.h>
+#include <sys/ptrace.h>
 #endif
 
 namespace Tools