diff --git a/Makefile.msvc b/Makefile.msvc
index 9a489bf..5e08524 100644
--- a/Makefile.msvc
+++ b/Makefile.msvc
@@ -8,7 +8,7 @@
 
 BUILDDIR = ../bin/
 CC = cl
-CFLAGS = /nologo /MT /W3 /Ox /GS /EHs- /GA /GF /D "MSVC" /D "WITH_STD_MALLOC" /D "NDEBUG" /D "WIN32" /D "_CONSOLE" /D "_MBCS" /D "_WIN32" /Fp"proxy.pch" /FD /c
+CFLAGS = /nologo /MT /W3 /Ox /GS /EHs- /GA /GF /D "MSVC" /D "WITH_STD_MALLOC" /D "NDEBUG" /D "WIN32" /D "_CONSOLE" /D "_MBCS" /D "_WIN32" /D "PRINTF_INT64_MODIFIER=\"I64\"" /Fp"proxy.pch" /FD /c
 COUT = /Fo
 LN = link
 LDFLAGS =  /nologo /subsystem:console /incremental:no /machine:I386
diff --git a/Makefile.msvc64 b/Makefile.msvc64
index c0174da..961403a 100644
--- a/Makefile.msvc64
+++ b/Makefile.msvc64
@@ -8,7 +8,7 @@
 
 BUILDDIR = ../bin64/
 CC = cl
-CFLAGS = /nologo /MT /W3 /Ox /EHs- /GS /GA /GF /D "MSVC" /D "WITH_STD_MALLOC" /D "NDEBUG" /D "WIN32" /D "_CONSOLE" /D "_MBCS" /D "_WIN32" /Fp"proxy.pch" /FD /c
+CFLAGS = /nologo /MT /W3 /Ox /EHs- /GS /GA /GF /D "MSVC" /D "WITH_STD_MALLOC" /D "NDEBUG" /D "WIN32" /D "_CONSOLE" /D "_MBCS" /D "_WIN32" /D "PRINTF_INT64_MODIFIER=\"I64\"" /Fp"proxy.pch" /FD /c
 COUT = /Fo
 LN = link
 LDFLAGS = /nologo /subsystem:console /incremental:no /machine:x64
diff --git a/Makefile.msvcCE b/Makefile.msvcCE
index 1e4056c..bbff3fa 100644
--- a/Makefile.msvcCE
+++ b/Makefile.msvcCE
@@ -8,7 +8,7 @@
 
 BUILDDIR = ../bin/
 CC = cl
-CFLAGS = /DARM /D "NOODBC" /nologo /MT /W3 /Wp64 /Ox /GS /EHs- /GA /GF /D "MSVC" /D "_WINCE" /D "WITH_STD_MALLOC" /D "NDEBUG" /D "WIN32" /D "_CONSOLE" /D "_MBCS" /D "_WIN32" /Fp"proxy.pch" /FD /c
+CFLAGS = /DARM /D "NOODBC" /nologo /MT /W3 /Wp64 /Ox /GS /EHs- /GA /GF /D "MSVC" /D "_WINCE" /D "WITH_STD_MALLOC" /D "NDEBUG" /D "WIN32" /D "_CONSOLE" /D "_MBCS" /D "_WIN32" /D "PRINTF_INT64_MODIFIER=\"I64\"" /Fp"proxy.pch" /FD /c
 COUT = /Fo
 LN = link
 LDFLAGS = /nologo /subsystem:console /incremental:no
diff --git a/Makefile.watcom b/Makefile.watcom
index ae5021c..9ebbfac 100644
--- a/Makefile.watcom
+++ b/Makefile.watcom
@@ -8,7 +8,7 @@
 
 BUILDDIR = ../bin/
 CC = cl
-CFLAGS = /nologo /Ox /MT /D "NOIPV6" /D "NODEBUG" /D "NOODBC" /D "NORADIUS" /D"WATCOM" /D "MSVC" /D "WITH_STD_MALLOC" /D "WIN32" /D "_CONSOLE" /D "_MBCS" /D "_WIN32" /c
+CFLAGS = /nologo /Ox /MT /D "NOIPV6" /D "NODEBUG" /D "NOODBC" /D "NORADIUS" /D"WATCOM" /D "MSVC" /D "WITH_STD_MALLOC" /D "WIN32" /D "_CONSOLE" /D "_MBCS" /D "_WIN32" /D "PRINTF_INT64_MODIFIER=\"I64\"" /c
 COUT = /Fo
 LN = link
 LDFLAGS = /nologo /subsystem:console /incremental:no 
diff --git a/src/structures.h b/src/structures.h
index 354a693..dbb1959 100644
--- a/src/structures.h
+++ b/src/structures.h
@@ -14,11 +14,9 @@
 #include <fcntl.h>
 #include <sys/types.h>
 #include <sys/stat.h>
-#ifndef NOPSTDINT
-#include "pstdint.h"
-#else
-typedef unsigned long uint64_t
-#define PRINTF_INT64_MODIFIER "l"
+#include <stdint.h>
+#ifndef PRINTF_INT64_MODIFIER
+#define PRINTF_INT64_MODIFIER "ll"
 #endif
 #ifdef  __cplusplus
 extern "C" {