diff --git a/CMakeLists.txt b/CMakeLists.txt
index 473e9b7..8ae0950 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -37,6 +37,7 @@ set(JSON_C_HEADERS
     ./linkhash.h
     ./math_compat.h
     ./strdup_compat.h
+    ./vasprintf_compat.h
     ./printbuf.h
     ./random_seed.h
 )
diff --git a/Makefile.am b/Makefile.am
index 64b1a3d..126ceeb 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -33,6 +33,7 @@ libjson_cinclude_HEADERS = \
 	linkhash.h \
 	math_compat.h \
 	strdup_compat.h \
+	vasprintf_compat.h \
 	printbuf.h \
 	random_seed.h
 
diff --git a/json-c.vcxproj b/json-c.vcxproj
index ab7b5e1..3a6da61 100644
--- a/json-c.vcxproj
+++ b/json-c.vcxproj
@@ -152,6 +152,7 @@ copy json_config.h.win32 json_config.h
     <ClInclude Include="linkhash.h" />
     <ClInclude Include="math_compat.h" />
     <ClInclude Include="strdup_compat.h" />
+    <ClInclude Include="vasprintf_compat.h" />
     <ClInclude Include="printbuf.h" />
     <ClInclude Include="random_seed.h" />
   </ItemGroup>
diff --git a/json-c.vcxproj.filters b/json-c.vcxproj.filters
index 3c6f43d..7fd4dd0 100644
--- a/json-c.vcxproj.filters
+++ b/json-c.vcxproj.filters
@@ -83,6 +83,9 @@
     <ClInclude Include="strdup_compat.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="vasprintf_compat.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
     <ClInclude Include="random_seed.h">
       <Filter>Header Files</Filter>
     </ClInclude>
diff --git a/json_pointer.c b/json_pointer.c
index 9cf3f16..3648f8d 100644
--- a/json_pointer.c
+++ b/json_pointer.c
@@ -17,6 +17,7 @@
 
 #include "json_pointer.h"
 #include "strdup_compat.h"
+#include "vasprintf_compat.h"
 
 /**
  * JavaScript Object Notation (JSON) Pointer
diff --git a/printbuf.c b/printbuf.c
index a40b89d..2745339 100644
--- a/printbuf.c
+++ b/printbuf.c
@@ -27,6 +27,7 @@
 
 #include "debug.h"
 #include "printbuf.h"
+#include "vasprintf_compat.h"
 
 static int printbuf_extend(struct printbuf *p, int min_size);
 
@@ -110,47 +111,6 @@ int printbuf_memset(struct printbuf *pb, int offset, int charvalue, int len)
 	return 0;
 }
 
-#if !defined(HAVE_VSNPRINTF) && defined(_MSC_VER)
-# define vsnprintf _vsnprintf
-#elif !defined(HAVE_VSNPRINTF) /* !HAVE_VSNPRINTF */
-# error Need vsnprintf!
-#endif /* !HAVE_VSNPRINTF && defined(WIN32) */
-
-#if !defined(HAVE_VASPRINTF)
-/* CAW: compliant version of vasprintf */
-static int vasprintf(char **buf, const char *fmt, va_list ap)
-{
-#ifndef WIN32
-	static char _T_emptybuffer = '\0';
-#endif /* !defined(WIN32) */
-	int chars;
-	char *b;
-
-	if(!buf) { return -1; }
-
-#ifdef WIN32
-	chars = _vscprintf(fmt, ap)+1;
-#else /* !defined(WIN32) */
-	/* CAW: RAWR! We have to hope to god here that vsnprintf doesn't overwrite
-	   our buffer like on some 64bit sun systems.... but hey, its time to move on */
-	chars = vsnprintf(&_T_emptybuffer, 0, fmt, ap)+1;
-	if(chars < 0) { chars *= -1; } /* CAW: old glibc versions have this problem */
-#endif /* defined(WIN32) */
-
-	b = (char*)malloc(sizeof(char)*chars);
-	if(!b) { return -1; }
-
-	if((chars = vsprintf(b, fmt, ap)) < 0)
-	{
-		free(b);
-	} else {
-		*buf = b;
-	}
-
-	return chars;
-}
-#endif /* !HAVE_VASPRINTF */
-
 int sprintbuf(struct printbuf *p, const char *msg, ...)
 {
   va_list ap;
diff --git a/vasprintf_compat.h b/vasprintf_compat.h
new file mode 100644
index 0000000..51e234b
--- /dev/null
+++ b/vasprintf_compat.h
@@ -0,0 +1,45 @@
+#ifndef __vasprintf_compat_h
+#define __vasprintf_compat_h
+
+#if !defined(HAVE_VSNPRINTF) && defined(_MSC_VER)
+# define vsnprintf _vsnprintf
+#elif !defined(HAVE_VSNPRINTF) /* !HAVE_VSNPRINTF */
+# error Need vsnprintf!
+#endif /* !HAVE_VSNPRINTF && defined(WIN32) */
+
+#if !defined(HAVE_VASPRINTF)
+/* CAW: compliant version of vasprintf */
+static int vasprintf(char **buf, const char *fmt, va_list ap)
+{
+#ifndef WIN32
+	static char _T_emptybuffer = '\0';
+#endif /* !defined(WIN32) */
+	int chars;
+	char *b;
+
+	if(!buf) { return -1; }
+
+#ifdef WIN32
+	chars = _vscprintf(fmt, ap)+1;
+#else /* !defined(WIN32) */
+	/* CAW: RAWR! We have to hope to god here that vsnprintf doesn't overwrite
+	   our buffer like on some 64bit sun systems.... but hey, its time to move on */
+	chars = vsnprintf(&_T_emptybuffer, 0, fmt, ap)+1;
+	if(chars < 0) { chars *= -1; } /* CAW: old glibc versions have this problem */
+#endif /* defined(WIN32) */
+
+	b = (char*)malloc(sizeof(char)*chars);
+	if(!b) { return -1; }
+
+	if((chars = vsprintf(b, fmt, ap)) < 0)
+	{
+		free(b);
+	} else {
+		*buf = b;
+	}
+
+	return chars;
+}
+#endif /* !HAVE_VASPRINTF */
+
+#endif /* __vasprintf_compat_h */