diff --git a/core/CapabilityCredential.hpp b/core/CapabilityCredential.hpp
index 6836a3291..93f222e53 100644
--- a/core/CapabilityCredential.hpp
+++ b/core/CapabilityCredential.hpp
@@ -14,10 +14,6 @@
 #ifndef ZT_CAPABILITY_HPP
 #define ZT_CAPABILITY_HPP
 
-#include <cstdio>
-#include <cstdlib>
-#include <cstring>
-
 #include "Constants.hpp"
 #include "Credential.hpp"
 #include "Address.hpp"
diff --git a/core/MembershipCredential.hpp b/core/MembershipCredential.hpp
index a0080f6c8..4ce816a33 100644
--- a/core/MembershipCredential.hpp
+++ b/core/MembershipCredential.hpp
@@ -16,9 +16,6 @@
 
 // TODO: redo
 
-#include <cstdint>
-#include <cstring>
-
 #include <string>
 #include <stdexcept>
 #include <algorithm>
diff --git a/core/OwnershipCredential.hpp b/core/OwnershipCredential.hpp
index 61b8b0785..259145197 100644
--- a/core/OwnershipCredential.hpp
+++ b/core/OwnershipCredential.hpp
@@ -14,11 +14,6 @@
 #ifndef ZT_CERTIFICATEOFOWNERSHIP_HPP
 #define ZT_CERTIFICATEOFOWNERSHIP_HPP
 
-#include <cstdint>
-#include <cstdio>
-#include <cstdlib>
-#include <cstring>
-
 #include "Constants.hpp"
 #include "Credential.hpp"
 #include "C25519.hpp"