diff --git a/src/common/cstdint.h b/src/common/cstdint.h
index 7fecbbaf..bb2e0ce0 100644
--- a/src/common/cstdint.h
+++ b/src/common/cstdint.h
@@ -1,3 +1,6 @@
+#ifndef CSTDINT_H
+#define CSTDINT_H
+
 #if defined(__has_include)
 #   if __has_include(<cstdint>)
 #       include <cstdint>
@@ -11,3 +14,5 @@
 #else
 #   include <cstdint>
 #endif
+
+#endif // CSTDINT_H