diff --git a/Source/Common/Platform/NMR_EncryptionHeader.cpp b/Source/Common/Platform/NMR_EncryptionHeader.cpp
index 7a2354ad6..2c839acbb 100644
--- a/Source/Common/Platform/NMR_EncryptionHeader.cpp
+++ b/Source/Common/Platform/NMR_EncryptionHeader.cpp
@@ -8,6 +8,7 @@
 #include "Common/Platform/NMR_ExportStream.h"
 
 #include "Common/NMR_Architecture_Utils.h"
+#include <cstdint>
 #include <cstring>
 
 #define LIB3MF_MAXENCRYPTIONHEADERSIZE (1UL << 31)
@@ -67,4 +68,4 @@ namespace NMR {
 	nfUint64 CEncryptionHeader::headerSize() const {
 		return m_nfHeaderSize;
 	}
-}
\ No newline at end of file
+}
diff --git a/Source/Common/Platform/NMR_ImportStream_Unique_Memory.cpp b/Source/Common/Platform/NMR_ImportStream_Unique_Memory.cpp
index 43fd4282a..d21d26c13 100644
--- a/Source/Common/Platform/NMR_ImportStream_Unique_Memory.cpp
+++ b/Source/Common/Platform/NMR_ImportStream_Unique_Memory.cpp
@@ -35,6 +35,8 @@ This is a platform independent class for keeping data in a memory stream that ow
 #include "Common/NMR_Exception.h"
 #include "Common/NMR_Exception_Windows.h"
 
+#include <cstdint>
+
 namespace NMR {
 
 	CImportStream_Unique_Memory::CImportStream_Unique_Memory()
@@ -132,4 +134,4 @@ namespace NMR {
 		return &m_Buffer[(size_t) nPosition]; 
 	}
 
-}
\ No newline at end of file
+}