diff --git a/core-legacy/oslink.h b/core-legacy/oslink.h
index 3529456..a21ea4d 100644
--- a/core-legacy/oslink.h
+++ b/core-legacy/oslink.h
@@ -85,7 +85,9 @@ bool GetFileOfAddress(void *pAddr, char *buffer, size_t maxlength);
 
 #ifndef __linux__
 	#define snprintf	_snprintf
-	#define vsnprintf	_vsnprintf
+	#if defined _MSC_VER && _MSC_VER < 1500
+		#define vsnprintf	_vsnprintf
+	#endif
 #endif
 
 #endif //_INCLUDE_OSLINK_H
diff --git a/core-legacy/sourcehook/generate/sourcehook.h b/core-legacy/sourcehook/generate/sourcehook.h
index 8fdc3ff..e98bf42 100644
--- a/core-legacy/sourcehook/generate/sourcehook.h
+++ b/core-legacy/sourcehook/generate/sourcehook.h
@@ -89,7 +89,7 @@
 # error Unsupported compiler
 #endif
 
-#if SH_COMP==SH_COMP_MSVC
+#if SH_COMP==SH_COMP_MSVC && _MSC_VER < 1500
 # define vsnprintf _vsnprintf
 #endif
 
diff --git a/core-legacy/sourcehook/generate/sourcehook.hxx b/core-legacy/sourcehook/generate/sourcehook.hxx
index e2566e8..bf78003 100755
--- a/core-legacy/sourcehook/generate/sourcehook.hxx
+++ b/core-legacy/sourcehook/generate/sourcehook.hxx
@@ -89,7 +89,7 @@
 # error Unsupported compiler
 #endif
 
-#if SH_COMP==SH_COMP_MSVC
+#if SH_COMP==SH_COMP_MSVC && _MSC_VER < 1500
 # define vsnprintf _vsnprintf
 #endif
 
diff --git a/core-legacy/sourcehook/sourcehook.h b/core-legacy/sourcehook/sourcehook.h
index f57594a..fecc7d7 100644
--- a/core-legacy/sourcehook/sourcehook.h
+++ b/core-legacy/sourcehook/sourcehook.h
@@ -99,7 +99,7 @@
 # error Unsupported compiler
 #endif
 
-#if SH_COMP==SH_COMP_MSVC
+#if SH_COMP==SH_COMP_MSVC && _MSC_VER < 1500
 # define vsnprintf _vsnprintf
 #endif
 
diff --git a/core/metamod_oslink.h b/core/metamod_oslink.h
index e72b18b..3899faa 100644
--- a/core/metamod_oslink.h
+++ b/core/metamod_oslink.h
@@ -105,7 +105,9 @@ bool GetFileOfAddress(void *pAddr, char *buffer, size_t maxlength);
 
 #ifndef __linux__
 	#define snprintf	_snprintf
-	#define vsnprintf	_vsnprintf
+	#if defined _MSC_VER && _MSC_VER < 1500
+		#define vsnprintf	_vsnprintf
+	#endif
 #endif
 
 #endif //_INCLUDE_OSLINK_H
diff --git a/core/sourcehook/generate/sourcehook.h b/core/sourcehook/generate/sourcehook.h
index 829b92c..708b802 100644
--- a/core/sourcehook/generate/sourcehook.h
+++ b/core/sourcehook/generate/sourcehook.h
@@ -94,7 +94,7 @@
 # error Unsupported compiler
 #endif
 
-#if SH_COMP==SH_COMP_MSVC
+#if SH_COMP==SH_COMP_MSVC && _MSC_VER < 1500
 # define vsnprintf _vsnprintf
 #endif
 
diff --git a/core/sourcehook/generate/sourcehook.hxx b/core/sourcehook/generate/sourcehook.hxx
index 07f94eb..f59964e 100755
--- a/core/sourcehook/generate/sourcehook.hxx
+++ b/core/sourcehook/generate/sourcehook.hxx
@@ -94,7 +94,7 @@
 # error Unsupported compiler
 #endif
 
-#if SH_COMP==SH_COMP_MSVC
+#if SH_COMP==SH_COMP_MSVC && _MSC_VER < 1500
 # define vsnprintf _vsnprintf
 #endif
 
diff --git a/core/sourcehook/sourcehook.h b/core/sourcehook/sourcehook.h
index 829b92c..708b802 100644
--- a/core/sourcehook/sourcehook.h
+++ b/core/sourcehook/sourcehook.h
@@ -94,7 +94,7 @@
 # error Unsupported compiler
 #endif
 
-#if SH_COMP==SH_COMP_MSVC
+#if SH_COMP==SH_COMP_MSVC && _MSC_VER < 1500
 # define vsnprintf _vsnprintf
 #endif