diff --git a/src/memphis/_types.hpp b/src/memphis/_types.hpp
index e0e9e95a9..47ea2c0ea 100644
--- a/src/memphis/_types.hpp
+++ b/src/memphis/_types.hpp
@@ -20,6 +20,8 @@ typedef  unsigned           uint_t;
 typedef  long long          int64_t;
 typedef  unsigned long long uint64_t;
 
+typedef  uint32_t Error;
+
 #ifdef _LP64
 typedef uint64_t size_t;
 #elif _LP32
diff --git a/src/memphis/memfs.cpp b/src/memphis/memfs.cpp
index 6cfd9168d..84c723f2c 100644
--- a/src/memphis/memfs.cpp
+++ b/src/memphis/memfs.cpp
@@ -37,7 +37,7 @@ void MemFs::Record::setData(uint8_t *data, int size) {
 
 // MemFs
 
-MemFs::MemFs(uint8_t *begin, uint8_t *end, uint32_t *error): m_version(*((uint32_t*) begin)), m_lastRec(*(MemFsPtr*) (begin + sizeof(m_version))) {
+MemFs::MemFs(uint8_t *begin, uint8_t *end, Error *error): m_version(*((uint32_t*) begin)), m_lastRec(*(MemFsPtr*) (begin + sizeof(m_version))) {
 	if (error) {
 		if (version != m_version) {
 			// version mismatch
diff --git a/src/memphis/memfs.hpp b/src/memphis/memfs.hpp
index c7b65bb57..0c87b75d0 100644
--- a/src/memphis/memfs.hpp
+++ b/src/memphis/memfs.hpp
@@ -51,7 +51,7 @@ class MemFs {
 		 * @param end pointer to the end of this MemFs's memory chunk
 		 * @param error pointer to a integer return errors into
 		 */
-		MemFs(uint8_t *begin, uint8_t *end, uint32_t *error = nullptr);
+		MemFs(uint8_t *begin, uint8_t *end, Error *error = nullptr);
 
 		/**
 		 * Initializes the memory chunk of this MemFs was given.